Updated on 2021/10/21

写真a

 
FUSHITANI, Mizuho
 
Organization
Graduate School of Science Division of Material Science Physical Chemistry Associate professor
Graduate School
Graduate School of Science
Undergraduate School
School of Science Department of Chemistry
Title
Associate professor

Degree 3

  1. Doctor (Science) ( 2002.3   Kyoto University ) 

  2. Master (Science) ( 1999.3   Kyoto University ) 

  3. Bachelor (Science) ( 1997.3   Kyoto University ) 

Research Areas 2

  1. Nanotechnology/Materials / Fundamental physical chemistry

  2. Natural Science / Semiconductors, optical properties of condensed matter and atomic physics

Current Research Project and SDGs 1

  1. 極紫外・X線強レーザー場における超高速分子過程

Research History 8

  1. Nagoya University   Associate professor

    2019.9

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    Country:Japan

  2. 名古屋大学大学院   理学研究科 物質理学専攻(化学)   講師

    2015.12 - 2019.8

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    Country:Japan

  3. Assistant Professor, Division of Material Science (Chemistry), Graduate School of Science, Nagoya University   Assistant Professor

    2010.7 - 2015.11

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    Country:Japan

  4. Assistant Professor, Division of Photo-Molecular Science III, Department of Photo-Molecular Science, Institute for Molecular Science   Assistant Professor

    2007.4 - 2010.6

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    Country:Japan

  5. Research Associate, Division of Photochemistry, Department of Vacuum UV Photoscience, Institute for Molecular Science   Assistant

    2006.8 - 2007.3

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    Country:Japan

  6. Long-term Posdoc, Institut fuer Experimentalphysik, Freie Universitaet Beriin, Germany

    2002.9 - 2006.8

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    Country:Germany

  7. Freie Univesität Berlin   Institut für Experimentalphysik   long-term Postdoc

    2002.9 - 2006.8

  8. 京都大学大学院    理学研究科 化学専攻   教務補佐員

    2002.4 - 2002.8

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    Country:Japan

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Education 3

  1. Kyoto University   Graduate School of Science

    1999.4 - 2002.3

  2. Kyoto University   Graduate School of Science   Department of Chemistry

    1997.4 - 1999.3

  3. Kyoto University   Faculty of Science   Division of Chemistry

    1993.4 - 1997.3

Professional Memberships 8

  1. Japan Society for Molecular Science

  2. The Physical Society of Japan

  3. The Chemical Society of Japan

  4. THE SPECTROSCOPICAL SOCIETY OF JAPAN

    2018.3

  5. THE PHYSICAL SOCIETY OF JAPAN

    2010.2

  6. JAPAN SOCIETY FOR MOLECULAR SCIENCE

    2006.10

  7. THE CHEMICAL SOCIETY OF JAPAN

    2004.12

  8. 日本分光学会   紫外フロンティア分光部会・幹事

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Committee Memberships 9

  1. 日本化学会東海支部   常任幹事  

    2021.3   

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    Committee type:Academic society

  2. 分光学会 紫外フロンティア分光部会   幹事  

    2018.4   

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    Committee type:Academic society

  3. 第13回分子科学討論会2019名古屋   実行委員  

    2018.1 - 2019.9   

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    Committee type:Academic society

  4. The 21st East Asian Workshop on Chemical Dynamics,   Vice Chair  

    2017.3 - 2017.12   

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    Committee type:Academic society

  5. 分子科学会   編集委員  

    2016.9   

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    Committee type:Academic society

  6. The Physical Society of Japan, Division 1 atoms and molecules   Steering Committee member  

    2013.4 - 2014.3   

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    Committee type:Academic society

  7. 日本化学会東海支部   幹事  

    2021.3   

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    Committee type:Academic society

  8. 第33回化学反応討論会   実行委員会委員(総務,会計担当)  

    2016.3 - 2017.6   

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    Committee type:Academic society

  9. 5th International Conference on Low Temperature Chemistry (LTC5)   a member of local organizing committee  

    2003.7 - 2004.9   

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    Committee type:Academic society

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Awards 1

  1. 平成27年度 分子科学研究奨励森野基金

    2015.8   公益信託 分子科学研究奨励森野基金  

    伏谷瑞穂

 

Papers 85

  1. Time-resolved shot-by-shot photoelectron spectroscopy of autoionizing Xe+ states by EUV–free-electron-laser and near-IR laser pulses Reviewed

    Mizuho Fushitani, Yoshitaka Kawabe, Hikaru Fujise, Makoto Yamada, Hiroka Hasegawa, Shigeki Owada, Tadashi Togashi, Kyo Nakajima, Makina Yabashi, Akitaka Matsuda, Yasumasa Hikosaka, Akiyoshi Hishikawa

    Physical Review A   Vol. 104 ( 2 ) page: 023102   2021.8

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physreva.104.023102

    Scopus

    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.104.023102/fulltext

  2. Time-resolved photoelectron imaging of complex resonances in molecular nitrogen Reviewed

    Mizuho Fushitani, Stephen T. Pratt, Daehyun You, Shu Saito, Yu Luo, Kiyoshi Ueda, Hikaru Fujise, Akiyoshi Hishikawa, Heide Ibrahim, François Légaré, Per Johnsson, Jasper Peschel, Emma R. Simpson, Anna Olofsson, Johan Mauritsson, Paolo Antonio Carpeggiani, Praveen Kumar Maroju, Matteo Moioli, Dominik Ertel, Ronak Shah, Giuseppe Sansone, Tamás Csizmadia, Mathieu Dumergue, N. G. Harshitha, Sergei Kühn, Carlo Callegari, Oksana Plekan, Michele Di Fraia, Miltcho B. Danailov, Alexander Demidovich, Luca Giannessi, Lorenzo Raimondi, Marco Zangrando, Giovanni De Ninno, Primož Rebernik Ribič, Kevin C. Prince

    Journal of Chemical Physics   Vol. 154 ( 14 ) page: 144305   2021.4

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    We have used the FERMI free-electron laser to perform time-resolved photoelectron imaging experiments on a complex group of resonances near 15.38 eV in the absorption spectrum of molecular nitrogen, N , under jet-cooled conditions. The new data complement and extend the earlier work of Fushitani et al. [Opt. Express 27, 19702-19711 (2019)], who recorded time-resolved photoelectron spectra for this same group of resonances. Time-dependent oscillations are observed in both the photoelectron yields and the photoelectron angular distributions, providing insight into the interactions among the resonant intermediate states. In addition, for most states, we observe an exponential decay of the photoelectron yield that depends on the ionic final state. This observation can be rationalized by the different lifetimes for the intermediate states contributing to a particular ionization channel. Although there are nine resonances within the group, we show that by detecting individual photoelectron final states and their angular dependence, we can identify and differentiate quantum pathways within this complex system. 2

    DOI: 10.1063/5.0046577

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    PubMed

  3. Capturing roaming molecular fragments in real time Reviewed International journal

    Tomoyuki Endo, Simon P. Neville, Vincent Wanie, Samuel Beaulieu, Chen Qu, Jude Deschamps, Philippe Lassonde, Bruno E. Schmidt, Hikaru Fujise, Mizuho Fushitani, Akiyoshi Hishikawa, Paul L. Houston, Joel M. Bowman, Michael S. Schuurman, François Légaré, Heide Ibrahim

    Science   Vol. 370 ( 6520 ) page: 1072 - +   2020.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:American Association for the Advancement of Science (AAAS)  

    Since the discovery of roaming as an alternative molecular dissociation pathway in formaldehyde (H<sub>2</sub>CO), it has been indirectly observed in numerous molecules. The phenomenon describes a frustrated dissociation with fragments roaming at relatively large interatomic distances rather than following conventional transition-state dissociation; incipient radicals from the parent molecule self-react to form molecular products. Roaming has been identified spectroscopically through static product channel–resolved measurements, but not in real-time observations of the roaming fragment itself. Using time-resolved Coulomb explosion imaging (CEI), we directly imaged individual “roamers” on ultrafast time scales in the prototypical formaldehyde dissociation reaction. Using high-level first-principles simulations of all critical experimental steps, distinctive roaming signatures were identified. These were rendered observable by extracting rare stochastic events out of an overwhelming background using the highly sensitive CEI method.

    DOI: 10.1126/science.abc2960

    Web of Science

    Scopus

    PubMed

  4. Multielectron-Ion Coincidence Spectroscopy of Xe in Extreme Ultraviolet Laser Fields: Nonlinear Multiple Ionization via Double Core-Hole States

    Fushitani M., Sasaki Y., Matsuda A., Fujise H., Kawabe Y., Hashigaya K., Owada S., Togashi T., Nakajima K., Yabashi M., Hikosaka Y., Hishikawa A.

    PHYSICAL REVIEW LETTERS   Vol. 124 ( 19 )   2020.5

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    Language:Japanese   Publisher:Physical Review Letters  

    Ultrafast multiphoton ionization of Xe in strong extreme ultraviolet free-electron laser (FEL) fields (91 eV, 30 fs, 1.6×1012 W/cm2) has been investigated by multielectron-ion coincidence spectroscopy. The electron spectra recorded in coincidence with Xe4+ show characteristic features associated with two-photon absorption to the 4d-2 double core-hole (DCH) states and subsequent Auger decay. It is found that the pathway via the DCH states, which has eluded clear identification in previous studies, makes a large contribution to the multiple ionization, despite the long FEL pulse duration compared with the lifetime of the 4d core-hole states.

    DOI: 10.1103/PhysRevLett.124.193201

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  5. Multielectron-Ion Coincidence Spectroscopy of Xe in Extreme Ultraviolet Laser Fields: Nonlinear Multiple Ionization via Double Core-Hole States Reviewed

    M. Fushitani, Y. Sasaki, A. Matsuda, H. Fujise, Y. Kawabe, K. Hashigaya, S. Owada, T. Togashi, K. Nakajima, M. Yabashi, Y. Hikosaka, and A. Hishikawa

    Phys. Rev. Lett.   Vol. 124 ( 19 ) page: 193201   2020.5

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  6. Femtosecond two-photon Rabi oscillations in excited He driven by ultrashort intense laser fields Reviewed

    Fushitani, M., Liu, C.-N., Matsuda, A., Endo, T., Toida, Y., Nagasono, M., Togashi, T., Yabashi, M., Ishikawa, T., Hikosaka, Y., Morishita, T., Hishikawa, A.

    Nature Photonics   Vol. 10 ( 2 ) page: 102 - +   2016.2

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/NPHOTON.2015.228

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  7. Determination of absolute cross-sections of nonresonant EUV-UV two-color two-photon ionization of he

    Fushitani M., Hikosaka Y., Matsuda A., Endo T., Shigemasa E., Nagasono M., Sato T., Togashi T., Yabashi M., Ishikawa T., Hishikawa A.

    Optics InfoBase Conference Papers     2014

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    Language:Japanese   Publisher:Optics InfoBase Conference Papers  

    Single-shot photoelectron spectroscopy was performed for nonresonant EUV-UV twocolor two-photon ionization of He. From data analysis on the shot-by-shot basis, the absolute cross-section was determined to be σ(2)(597nm, 268nm) = 4.1(6)×10-52 cm4 s. © 2014 OSA.

    DOI: 10.1364/up.2014.08.tue.p2.5

    Scopus

  8. Ultrafast photoelectron spectroscopy of electron-ion wave packets in Rydberg N<inf>2</inf>

    Fushitani M., Toida Y., Légaré F., Hishikawa A.

    Optics InfoBase Conference Papers     2014

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    Language:Japanese   Publisher:Optics InfoBase Conference Papers  

    Time-resolved photoelectron spectroscopy of N2 Rydberg using single-order high harmonics at 80 nm reveals ultrafast wavepacket dynamics (~3 fs) of both Rydberg electron and the corresponding N2 + core as the beating oscillation (~ 300 fs). © 2014 OSA.

    DOI: 10.1364/up.2014.07.mon.p1.5

    Scopus

  9. Ultrafast coulomb explosion of formaldehyde in 7 and 35 fs intense laser fields studied by triple ion-coincidence momentum imaging

    Tseng C.M., Matsuda A., Fushitani M., Hishikawa A.

    Optics InfoBase Conference Papers     2014

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    Language:Japanese   Publisher:Optics InfoBase Conference Papers  

    Ultrafast three-body Coulomb explosion of formaldehyde (H2CO) in intense laser fields has been studied. The pulse duration dependence of the Newton plot of the fragment ions revealed the ultrafast molecular dynamics in the dication states. © 2014 OSA.

    DOI: 10.1364/up.2014.09.wed.p3.23

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  10. Two-photon rabi oscillations of excited he atoms in ultrafast strong laser field ionization

    Fushitani M., Liu C.N., Matsuda A., Endo T., Toida Y., Hikosaka Y., Nagasono M., Togashi T., Yabashi M., Ishikawa T., Morishita T., Hishikawa A.

    Optics InfoBase Conference Papers     2014

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    Language:Japanese   Publisher:Optics InfoBase Conference Papers  

    Intensity dependence of polarized He (21P) atoms in intense NIR laser fields are investigated by single-shot photoelectron spectroscopy, revealing two-photon Rabi oscillations between the initial 1s2p and 1snf (n = 5,6) Rydberg states. © 2014 OSA.

    DOI: 10.1364/up.2014.08.tue.p2.4

    Scopus

  11. EUV and soft X-ray photoelectron spectroscopy of isolated atoms and molecules using single-order laser high-harmonics at 42 eV and 91 eV Reviewed

    Fushitani, M., Matsuda, A., Hishikawa, A.

    Journal of Electron Spectroscopy and Related Phenomena   Vol. 184 ( 11-12 ) page: 561 - 568   2012.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.elspec.2011.10.002

    Web of Science

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  12. Applications of pump-probe spectroscopy Reviewed

    Mizuho Fushitani

    Annual Reports on the Progress of Chemistry - Section C   Vol. 104   page: 272 - 297   2008

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    Publishing type:Research paper (scientific journal)  

    This review outlines advances that have been made in recent years (2005-2007) in the study of ultrafast dynamics occurring in physical, chemical and biological research fields by using pump-probe techniques. Special emphasis is placed on coherent phenomena in materials and experimental achievements of coherent control of wave packets dynamics. After a brief theoretical description of pump-probe methods, an overview of nuclear and electronic coherences appearing in pump-probe spectroscopy is presented. Some of the highlights include molecular alignments, wave packet interferometry, hydrogen migration, and attosecond electron dynamics. © 2008 The Royal Society of Chemistry.

    DOI: 10.1039/b703983m

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  13. Ultrafast dynamics of halogens in rare gas solids

    M. Guehr, M. Bargheer, M. Fushitani, T. Kiljunen, N. Schwentner

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   Vol. 9 ( 7 ) page: 779 - 801   2007

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    Language:Japanese   Publisher:ROYAL SOC CHEMISTRY  

    We perform time resolved pump-probe spectroscopy on small halogen molecules ClF, Cl-2, Br-2, and I-2 embedded in rare gas solids (RGS). We find that dissociation, angular depolarization, and the decoherence of the molecule is strongly influenced by the cage structure. The well ordered crystalline environment facilitates the modelling of the experimental angular distribution of the molecular axis after the collision with the rare gas cage. The observation of many subsequent vibrational wave packet oscillations allows the construction of anharmonic potentials and indicate a long vibrational coherence time. We control the vibrational wave packet revivals, thereby gaining information about the vibrational decoherence. The coherence times are remarkable larger when compared to the liquid or high pressure gas phase. This fact is attributed to the highly symmetric molecular environment of the RGS. The decoherence and energy relaxation data agree well with a perturbative model for moderate vibrational excitation and follow a classical model in the strong excitation limit. Furthermore, a wave packet interferometry scheme is applied to deduce electronic coherence times. The positions of those cage atoms, excited by the molecular electronic transitions are modulated by long living coherent phonons of the RGS, which we can probe via the molecular charge transfer states.

    DOI: 10.1039/b609058n

    Web of Science

  14. Cage motions induced by electronic and vibrational excitations: Cl-2 in Ar Reviewed

    M Fushitani, N Schwentner, M Schroder, O Kuhn

    JOURNAL OF CHEMICAL PHYSICS   Vol. 124 ( 2 )   2006.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:AMER INST PHYSICS  

    Femtosecond dynamics of molecular vibrations as well as cage motions in the B &lt;- X transition of Cl-2 in solid Ar have been investigated. We observed molecular vibrational wave-packet motion in experimental pump-probe spectra and an additional oscillation with a 500 fs period which is assigned to the zone-boundary phonon of the Ar crystal. The cage motion is impulsively driven by the B &lt;- X transition due to the expansion of the electronic cloud of the chromophore. To clarify the underlying mechanism, we performed simulations based on the diatomics-in-molecules method which takes into account the different shapes of the Cl-2 electronic wave function in the B and X states as well as the anisotropic interaction with the matrix. The simulation results show that Ar atom motion in the (100) plane is initiated by the electronic transition and that only those Ar atoms oscillate coherently with an similar to 500 fs period which are essentially decoupled from the molecular vibration. Their phase and time evolution are in good agreement with the experimentally observed oscillation, supporting the assignment as a displacive excitation of coherent phonons. (c) 2006 American Institute of Physics.

    DOI: 10.1063/1.2147241

    Web of Science

  15. Pump-probe spectroscopy with phase-locked pulses in the condensed phase: Decoherence and control of vibrational wavepackets Reviewed

    Fushitani, M., Bargheer, M., Gühr, M., Schwentner, N.

    Physical Chemistry Chemical Physics   Vol. 7 ( 17 ) page: 3143 - 3149   2005

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/b509153e

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  16. Nuclear spin selection rule in the photochemical reaction of CH<inf>3</inf> in solid parahydrogen Reviewed

    Mizuho Fushitani, Takamasa Momose

    Journal of Chemical Physics   Vol. 116 ( 24 ) page: 10739 - 10743   2002.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Nuclear spin selection rule was investigated in the photochemical reaction of CH3 and solid parahydrogen. Conservation of nuclear spin during the reaction was examined by the intensity distribution of the rotation-vibration spectrum of methane produced by the reaction. The methyl radical CH3 was produced by in situ ultraviolet (UV) photolysis of methyl iodide CH3I embedded in solid parahydrogen. The results showed that the population of each nuclear spin state of methane was different from that of the statistical ratio. This indicated that a nuclear spin selection rule existed in the reaction.

    DOI: 10.1063/1.1480003

    Web of Science

    Scopus

  17. On the measurement of statistical dynamics using the method of Coulomb explosion imaging

    Tomoyuki Endo, Simon P. Neville, Vincent Wanie, Samuel Beaulieu, Chen Qu, Philippe Lassonde, Bruno E. Schmidt, Hikaru Fujise, Mizuho Fushitani, Akiyoshi Hishikawa, Paul L. Houston, Joel M. Bowman, Michael S. Schuurman, François Légaré, Heide Ibrahim

    AIP Conference Proceedings   Vol. 2343   2021.3

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    Language:Japanese   Publishing type:Research paper (international conference proceedings)  

    Using time-resolved Coulomb explosion imaging (CEI) in an ultraviolet (UV) pump near infrared (NIR) probe experiment, we directly image the different dissociation dynamics in the formaldehyde molecule. Different pathways are distinguished from each other, despite their statistical nature. To extract such dynamics, hidden in a statistical background, calls for an elimination of noise. In our approach, we take advantage of CEI being a quasi-background-free technique.

    DOI: 10.1063/5.0047930

    Scopus

  18. Capturing roaming fragments in real time: A molecular road movie

    Endo T.

    Optics InfoBase Conference Papers     2020.11

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    Publisher:Optics InfoBase Conference Papers  

    DOI: 10.1364/UP.2020.Th4A.1

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  19. Ultrafast Reaction Imaging and Control by Ultrashort Intense Laser Pulses Reviewed

    Akiyoshi Hishikawa, Akitaka Matsuda, Mizuho Fushitani

    Bulletin of the Chemical Society of Japan   Vol. 93 ( 11 ) page: 1293 - 1304   2020.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    DOI: 10.1246/bcsj.20200158

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  20. Characterization of soft X-ray FEL pulse duration with two-color photoelectron spectroscopy Reviewed

    Shigeki Owada, Mizuho Fushitani, Akitaka Matsuda, Hikaru Fujise, Yuuma Sasaki, Yasumasa Hikosaka, Akiyoshi Hishikawa, Makina Yabashi

    Journal of Synchrotron Radiation   Vol. 27 ( 5 ) page: 1362 - 1365   2020.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:International Union of Crystallography (IUCr)  

    The pulse duration of soft X-ray free-electron laser (FEL) pulses of SACLA BL1 (0.2–0.3 nC per bunch, 0.5–0.8 MeV) were characterized by photoelectron sideband measurements. The intensity of the He 1 s<sup>−1</sup> photoelectron sidebands generated by a near-infrared femtosecond laser was measured as a function of the time delay between the two pulses using an arrival time monitor. From the width of the cross-correlation trace thus derived, the FEL pulse duration was evaluated to be 28 ± 5 fs full width at half-maximum in the photon energy range between 40 eV and 120 eV.

    DOI: 10.1107/S1600577520008516

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  21. Angle dependence of dissociative tunneling ionization of NO in asymmetric two-color intense laser fields Reviewed

    Tomoyuki Endo, Hikaru Fujise, Hiroka Hasegawa, Akitaka Matsuda, Mizuho Fushitani, Oleg I. Tolstikhin, Toru Morishita, Akiyoshi Hishikawa

    Physical Review A   Vol. 100 ( 5 ) page: 053422   2019.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    © 2019 American Physical Society. Dissociative tunneling ionization of nitric oxide (NO) in linearly polarized phase-locked two-color femtosecond intense laser fields (45 fs, λ=800 and 400 nm, total field intensity I=1×1014W/cm2) has been studied by three-dimensional ion momentum imaging. The N+ fragment produced by the dissociative ionization, NO→NO++e-→N++O+e-, exhibits a butterflylike momentum distribution peaked at finite angles with respect to the laser polarization direction. In addition, a clear dependence on the relative phase between the two laser fields is observed, showing that the tunneling ionization occurs efficiently when the electric field points from N to O. For the highest kinetic energy component, the observed orientation dependence is well explained with theoretical calculations by the weak-field asymptotic theory for the 2πhighest occupied molecular orbital (HOMO). On the other hand, the peak angle shifts toward the laser polarization direction as the kinetic energy decreases, indicating that pathways other than direct ionization from the HOMO contribute to the dissociative ionization.

    DOI: 10.1103/PhysRevA.100.053422

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  22. Probing Rydberg-Rydberg interactions in N<inf>2</inf> by ultrafast EUV-NIR photoelectron spectroscopy Reviewed

    Fushitani, M., Toida, Y., Légaré, F., Hishikawa, A.

    Optics Express   Vol. 27 ( 14 ) page: 19702 - 19711   2019.7

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1364/OE.27.019702

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  23. Coincidence momentum imaging of four- and three-body Coulomb explosion of formaldehyde in ultrashort intense laser fields Reviewed

    Tseng, C.-M., Fushitani, M., Matsuda, A., Hishikawa, A.

    Journal of Electron Spectroscopy and Related Phenomena   Vol. 228   page: 25 - 30   2018.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.elspec.2018.07.001

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  24. 強レーザーパルスを用いた量子状態の超高速多光子操作 Invited Reviewed

    伏谷瑞穂,菱川明栄

    レーザー研究   Vol. 45   page: 493-497   2017.8

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    Authorship:Lead author   Language:Japanese  

  25. Selective bond breaking of CO<inf>2</inf> in phase-locked two-color intense laser fields: Laser field intensity dependence Reviewed

    Endo, T., Fujise, H., Kawachi, Y., Ishihara, A., Matsuda, A., Fushitani, M., Kono, H., Hishikawa, A.

    Physical Chemistry Chemical Physics   Vol. 19 ( 5 ) page: 3550 - 3556   2017.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c6cp07471e

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  26. Single-order laser high harmonics in XUV for ultrafast photoelectron spectroscopy of molecular wavepacket dynamics Reviewed

    Fushitani, M., Hishikawa, A.

    Structural Dynamics   Vol. 3 ( 6 ) page: 062602   2016.11

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.4964775

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  27. Imaging Electronic Excitation of NO by Ultrafast Laser Tunneling Ionization Reviewed

    Endo, T., Matsuda, A., Fushitani, M., Yasuike, T., Tolstikhin, O.I., Morishita, T., Hishikawa, A.

    Physical Review Letters   Vol. 116 ( 16 )   2016.4

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevLett.116.163002

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  28. Photoelectron sidebands induced by a chirped laser field for shot-by-shot temporal characterization of FEL pulses Reviewed

    Liu, C.-N., Morishita, T., Fushitani, M., Hishikawa, A.

    Journal of Physics B: Atomic, Molecular and Optical Physics   Vol. 49 ( 3 )   2016.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/0953-4075/49/3/034005

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  29. Coincidence momentum imaging of asymmetric Coulomb explosion of CO<inf>2</inf> in phase-locked two-color intense laser fields Reviewed

    Endo, T., Fujise, H., Matsuda, A., Fushitani, M., Kono, H., Hishikawa, A.

    Journal of Electron Spectroscopy and Related Phenomena   Vol. 207   page: 50 - 54   2016.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.elspec.2015.12.010

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  30. Correlation between Photoeletron and Photoion in Ultrafast Multichannel Photoionization of Ar Reviewed

    R. Itakura, M. Fushitani, A. Hishikawa, T. Sako

    INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2015 (ICCMSE 2015)   Vol. 1702   2015

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    Language:Japanese   Publishing type:Research paper (international conference proceedings)   Publisher:AMER INST PHYSICS  

    We theoretically investigate coherent dynamics of ions created through ultrafast multichannel photoionization from a viewpoint of photoelectron-photoion correlation. The model calculation on single-photon ionization of Ar reveals that the coherent hole dynamics in Ar+ associated with a superposition of the spin-orbit states P-2(J) (J = 3/2 and 1/2) can be identified by monitoring only the photoion created by a Fourier-transform limited extreme ultraviolet (EUV) pulse with the 9-fs pulse duration, while the coherence is lost by a chirped EUV pulse. It is demonstrated that by coincidence detection of the photoelectron and photoion the coherent hole dynamics can be extracted even in the case of ionization by a chirped EUV pulse with the sufficiently wide bandwidth.

    DOI: 10.1063/1.4938829

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  31. Determination of Absolute Cross-Sections of Nonresonant EUV-UV Two-Color Two-Photon Ionization of He Reviewed

    M. Fushitani, Y. Hikosaka, A. Matsuda, T. Endo, E. Shigemasa, M. Nagasono, T. Sato, T. Togashi, M. Yabashi, T. Ishikawa, A. Hishikawa

    ULTRAFAST PHENOMENA XIX   Vol. 162   page: 109 - 112   2015

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    Single-shot photoelectron spectroscopy was performed for nonresonant EUV-UV two-color two-photon ionization of He. From data analysis on the shot-by-shot basis, the absolute cross-section was determined to be sigma((2))(59.7 nm, 268 nm) = 4.1(6) x 10(-52) cm(4) s.

    DOI: 10.1007/978-3-319-13242-6_26

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    Other Link: http://orcid.org/0000-0003-1444-8917

  32. Ultrafast two-photon Rabi oscillations in excited He driven by femtosecond intense laser fields Reviewed

    A. Hishikawa, M. Fushitani, C. N. Liu, A. Matsuda, T. Endo, Y. Toida, Y. Hikosaka, T. Morishita

    XXIX INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC, AND ATOMIC COLLISIONS (ICPEAC2015), PTS 1-12   Vol. 635 ( 9 )   2015

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    We demonstrate ultrafast multiphoton coherent excitation in near-infrared intense laser fields (&lt;= 10 TW/cm(2)) using excited helium in the 1s2p (P-1) state as the target. Strong two-photon coupling between the 2p state and the 5f and 6f Rydberg states drives ultrafast Rabi oscillations in tens of femtosecond. Theoretical calculations solving the time-dependent Schrodinger equation were carried out to elucidate the strong field effects.

    DOI: 10.1088/1742-6596/635/9/092082

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    Other Link: http://orcid.org/0000-0003-1444-8917

  33. Ion-Coincidence Momentum Imaging of Three-Body Coulomb Explosion of Formaldehyde in Ultrashort Intense Laser Fields Reviewed

    M. Fushitani, C-M. Tseng, A. Matsuda, A. Hishikawa

    INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2015 (ICCMSE 2015)   Vol. 1702   2015

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    Three-body Coulomb explosion of formaldehyde (H2CO) in intense 7- and 35-fs laser fields (1.3 x 10(15) W/cm(2)) has been investigated by using ion-coincidence momentum imaging technique. Two types of explosion pathways from the triply charged state, H2CO3+ -&gt; (i) H+ + H+ + CO+ and (ii) H+ + CH+ + O+, have been identified. It is shown from the momentum correlation of the fragment ions of pathway (i), that the geometrical structure of the molecule is essentially frozen along the H-C-H bending coordinate for the 7-fs case. On the other hand, for a longer pulse duration (35 fs), structural deformation along the C-H stretching and H-C-H bending coordinates is identified, which is ascribed to the nuclear dynamics in the dication states populated within the laser pulse duration.

    DOI: 10.1063/1.4938821

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  34. Fragment anisotropy on dissociative ionization of NO in two-color intense laser fields Reviewed

    Tomoyuki Endo, Ayaka Ishihara, Akitaka Matsuda, Mizuho Fushitani, Akiyoshi Hishikawa

    XXIX INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC, AND ATOMIC COLLISIONS (ICPEAC2015), PTS 1-12   Vol. 635 ( 11 )   2015

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    Dissociative-ionization of NO, NO -&gt; NO+ + e(-) -&gt; N+ + O + e(-), in omega-2 omega two-color phase-controlled intense laser fields was investigated by three-dimensional ion momentum imaging. The moment Urn image of the N+ ion exhibited anisotropic distributions peaked at 35 degrees against the laser polarization, which show clear left-right asymmetry depending on the omega-2 omega relative phase. The present study demonstrates that the molecular orbital can be retrieved by distinguishing the difference between the N and O side from the fragment anisotropy by intense laser pulses.

    DOI: 10.1088/1742-6596/635/11/112027

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    Other Link: http://orcid.org/0000-0003-1444-8917

  35. Five-photon sequential double ionization of He in intense extreme-ultraviolet free-electron laser fields Reviewed

    Y. Hikosaka, M. Fushitani, A. Matsuda, T. Endo, Y. Toida, E. Shigemasa, M. Nagasono, K. Tono, T. Togashi, M. Yabashi, T. Ishikawa and A. Hishikawa

    Phys. Rev. A   Vol. 90   page: 053403   2014.11

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    DOI: 10.1103/PhysRevA.90.053403]

  36. Five-photon sequential double ionization of He in intense extreme-ultraviolet free-electron laser fields Reviewed

    Hikosaka, Y., Fushitani, M., Matsuda, A., Endo, T., Toida, Y., Shigemasa, E., Nagasono, M., Tono, K., Togashi, T., Yabashi, M., Ishikawa, T., Hishikawa, A.

    Physical Review A - Atomic, Molecular, and Optical Physics   Vol. 90 ( 5 )   2014.11

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    DOI: 10.1103/PhysRevA.90.053403

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  37. Photoelectron-photoion correlation in ultrafast multichannel photoionization of Ar Reviewed

    Itakura, R., Fushitani, M., Hishikawa, A., Sako, T.

    Journal of Physics B: Atomic, Molecular and Optical Physics   Vol. 47 ( 19 ) page: 195602   2014.10

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    DOI: 10.1088/0953-4075/47/19/195602

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  38. Dissociative ionization of NO in few-cycle intense laser fields : Effects of pi-sigma electronic transition Reviewed

    Tomoyuki Endo, Mizuho Fushitani, Akitaka Matsuda, Akiyoshi Hishikawa

    XXVIII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC)   Vol. 488 ( SECTION 3 )   2014

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    Dissociative ionization (DI) of NO in few-cycle intense laser fields was investigated by using the 3D momentum imaging method. It was found that the symmetry change in the outermost occupied molecular orbital upon the pi - sigma electronic transition is clearly reflected in the spatial anisotropy of the fragment ion, N+.

    DOI: 10.1088/1742-6596/488/3/032025

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    Other Link: http://orcid.org/0000-0003-1444-8917

  39. Two-photon rabi oscillations of excited he atoms in ultrafast strong laser field ionization Reviewed

    Fushitani M, Liu C.-N, Matsuda A, Endo T, Toida Y, Hikosaka Y, Nagasono M, Togashi T, Yabashi M, Ishikawa T, Morishita T, Hishikawa A

    Optics InfoBase Conference Papers     2014

  40. Nonresonant EUV-UV two-color two-photon ionization of He studied by single-shot photoelectron spectroscopy Reviewed

    Fushitani, M., Hikosaka, Y., Matsuda, A., Endo, T., Shigemasa, E., Nagasono, M., Sato, T., Togashi, T., Yabashi, M., Ishikawa, T., Hishikawa, A.

    Physical Review A - Atomic, Molecular, and Optical Physics   Vol. 88 ( 6 ) page: 063422   2013.12

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    DOI: 10.1103/PhysRevA.88.063422

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  41. Resonances in three-photon double ionization of Ar in intense extreme-ultraviolet free-electron laser fields studied by shot-by-shot photoelectron spectroscopy Reviewed

    Hikosaka, Y., Fushitani, M., Matsuda, A., Endo, T., Toida, Y., Shigemasa, E., Nagasono, M., Tono, K., Togashi, T., Yabashi, M., Ishikawa, T., Hishikawa, A.

    Physical Review A - Atomic, Molecular, and Optical Physics   Vol. 88 ( 2 ) page: 023421   2013.8

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    DOI: 10.1103/PhysRevA.88.023421

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  42. Time-resolved four-body coulomb explosion imaging of correlated dynamics of hydrogen atoms in acetylene dication Reviewed

    A. Matsuda, M. Fushitani, E. J. Takahashi, A. Hishikawa

    EPJ Web of Conferences   Vol. 41   2013

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    The correlated motion of the two deuterium atoms associated with the hydrogen migration and structural deformation to non-planar geometry are identified in acetylene dication by the time-resolved four-body Coulomb explosion imaging. © Owned by the authors, published by EDP Sciences, 2013.

    DOI: 10.1051/epjconf/20134102013

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  43. Ultrafast nonlinear double excitations of he in intense EUV FEL fields Reviewed

    M. Fushitani, Y. Hikosaka, A. Matsuda, C. N. Liu, T. Morishita, E. Shigemasa, A. Hishikawa

    EPJ Web of Conferences   Vol. 41   2013

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    Three-photon double excitation of He in intense EUV FEL fields is studied by the shot-by-shot photoelectron spectroscopy, revealing the enhancement by resonances to the doubly excited states converging to the He+ N=3 level. © Owned by the authors, published by EDP Sciences, 2013.

    DOI: 10.1051/epjconf/20134102009

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  44. Phase Sensitive Control of Vibronic Guest-Host Interaction: Br-2 in Ar Matrix (vol 113, pg 7439, 2009) Reviewed

    Heide Ibrahim, Monika Hejjas, Mizuho Fushitani, Nikolaus Schwentner

    JOURNAL OF PHYSICAL CHEMISTRY A   Vol. 116 ( 10 ) page: 2598 - 2598   2012.3

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    DOI: 10.1021/jp301367j

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  45. Erratum: Phase sensitive control of vibronic guest-host interaction: Br <inf>2</inf> in Ar matrix (Journal of Physical Chemistry A (2009) 113: 26 (7439-7450) DOI: 10.1021/jp900287m) Reviewed

    Ibrahim, H., Héjjas, M., Fushitani, M., Schwentner, N.

    Journal of Physical Chemistry A   Vol. 116 ( 10 ) page: 2598 - 2598   2012

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    DOI: 10.1021/jp301367j

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  46. Visualizing correlated dynamics of hydrogen atoms in acetylene dication by time-resolved four-body coulomb explosion imaging Reviewed

    Akitaka Matsuda, Mizuho Fushitani, Eiji J. Takahashi, Akiyoshi Hishikawa

    Springer Proceedings in Physics   Vol. 125   page: 317 - 322   2012

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    Ultrafast hydrogenmigration in deuterated acetylene dication (C 2D2+2 ) is studied by time-resolved four-body Coulomb explosion imaging, C2D4+ 2 → D++ C ++ C ++ D +, using a pair of few-cycle intense laser pulses (9 fs, 1.3 × 1014 W/cm 2). Momentum correlation of the D+ ions produced by the full fragmentation process shows that (1) motions of the two deuterium atoms are strongly correlated during the isomerization and (2) the molecular structure deforms to nonplanar geometries. © Springer-Verlag Berlin Heidelberg 2012.

    DOI: 10.1007/978-3-642-28948-4_53

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  47. Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields Reviewed

    Hishikawa, A., Fushitani, M., Hikosaka, Y., Matsuda, A., Liu, C.-N., Morishita, T., Shigemasa, E., Nagasono, M., Tono, K., Togashi, T., Ohashi, H., Kimura, H., Senba, Y., Yabashi, M., Ishikawa, T.

    Physical Review Letters   Vol. 107 ( 24 ) page: 243003   2011.12

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    DOI: 10.1103/PhysRevLett.107.243003

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  48. A magnetic-bottle multi-electron-ion coincidence spectrometer Reviewed

    Matsuda, A., Fushitani, M., Tseng, C.-M., Hikosaka, Y., Eland, J.H.D., Hishikawa, A.

    Review of Scientific Instruments   Vol. 82 ( 10 ) page: 103105   2011.10

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    DOI: 10.1063/1.3648133

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  49. Time-resolved EUV photoelectron spectroscopy of dissociating I<inf>2</inf> by laser harmonics at 80 nm Reviewed

    Fushitani, M., Matsuda, A., Hishikawa, A.

    Optics Express   Vol. 19 ( 10 ) page: 9600 - 9606   2011.5

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    DOI: 10.1364/OE.19.009600

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  50. Visualizing hydrogen atoms migrating in acetylene dication by time-resolved three-body and four-body Coulomb explosion imaging Reviewed

    Matsuda, A., Fushitani, M., Takahashi, E.J., Hishikawa, A.

    Physical Chemistry Chemical Physics   Vol. 13 ( 19 ) page: 8697 - 8704   2011

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    DOI: 10.1039/c0cp02333g

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  51. Infrared spectroscopy of rovibrational transitions of methyl radicals (CH<inf>3</inf>, CD<inf>3</inf>) in solid parahydrogen Reviewed

    Hoshina, H., Fushitani, M., Momose, T.

    Journal of Molecular Spectroscopy   Vol. 268 ( 1-2 ) page: 164 - 172   2011

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    DOI: 10.1016/j.jms.2011.04.014

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  52. Multiphoton double ionization of Ar in intense extreme ultraviolet laser fields studied by shot-by-shot photoelectron spectroscopy Reviewed

    Hikosaka, Y., Fushitani, M., Matsuda, A., Tseng, C.-M., Hishikawa, A., Shigemasa, E., Nagasono, M., Tono, K., Togashi, T., Ohashi, H., Kimura, H., Senba, Y., Yabashi, M., Ishikawa, T.

    Physical Review Letters   Vol. 105 ( 13 )   2010.9

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    DOI: 10.1103/PhysRevLett.105.133001

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  53. Phase Sensitive Control of Vibronic Guest-Host Interaction: Br-2 in Ar Matrix Reviewed

    Heide Ibrahim, Monika Hejjas, Mizuho Fushitani, Nikolaus Schwentner

    JOURNAL OF PHYSICAL CHEMISTRY A   Vol. 113 ( 26 ) page: 7439 - 7450   2009.7

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    Vibronic progressions are programmed into a pulse shaper which converts them via the inherent Fourier transformation into a train of femtosecond pulses in time domain for chromophore excitation. Double Pulse results agree with phase-sensitive wave packet superposition from a Michelson interferometer which delivers coherence times with high reliability. Spectral resolution of 1 nm and a spacing of around 4 nm within the 20 nm envelope centered at 590 nm delivers a train of seven phase-controlled 40 fs subpulses separated by 250 fs. Combs adjusted to the zero phonon lines (ZPL) and phonon sidebands (PSB) of the B state vibronic progression are reproduced in the chromophore for a coherent subpulse accumulation. B state ZPL wave packet dynamics dominates in pump-probe spectra due to its coherence despite an overwhelming but incoherent A state contribution in absorption. PSB comb accumulation is also phase sensitive and demonstrates coherence within several 100 matrix degrees of freedom in the vicinity.

    DOI: 10.1021/jp900287m

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  54. Multiple Explosion Pathways of the Deuterated Benzene Trication in 9-fs Intense Laser Fields Reviewed

    Akitaka Matsuda, Mizuho Fushitani, Richard A. Thomas, Vitali Zhaunerchyk, Akiyoshi Hishikawa

    JOURNAL OF PHYSICAL CHEMISTRY A   Vol. 113 ( 11 ) page: 2254 - 2260   2009.3

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    The fragmentation of deuterated benzene (CA) in ultrashort intense laser fields (9 fs, 1 x 10(15) W/cm(2)) is studied by the ion-coincidence momentum imaging technique. Five two-body and eight three-body Coulomb explosion pathways from the trication (C(6)D(6)(3+)), associated with the deprotonation and ring-opening reactions, are identified. It is found from the fragment momentum correlation that all the observed three-body explosion processes proceed sequentially via the two-body Coulomb explosion forming molecular dications, C(m)D(n)(2+), with (m,n) = (6,5), (5,5), (5,4), (4,4), (4,3), and (3,3), which further dissociate into pairs of monocations. The branching ratio of the fragmentation pathways estimated from the number of the observed coincidence events indicates that the fragmentation is nonstatistical.

    DOI: 10.1021/jp806466x

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  55. Electron-ion coincidence momentum imaging of molecular dissociative ionization in intense laser fields: Application to CS2 Reviewed

    Akitaka Matsuda, Mizuho Fushitani, Akiyoshi Hishikawa

    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   Vol. 169 ( 2-3 ) page: 97 - 101   2009.2

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    An electron-ion coincidence momentum imaging apparatus has been developed and applied to dissociative ionization of CS2 in ultrashort intense laser fields. Photoelectron images of CS2 in 35 fs intense laser fields (2 x 10(13) W/cm(2), 800 nm, linearly polarized) recorded in coincidence with the parent ion, CS2+, show clear concentric ring patterns due to the above-threshold ionization (ATI) process. On the other hand, broad structureless distributions elongated along the direction of the laser polarization are observed in the coincidence electron images for the CS+ and S' fragment ions. The difference in the electron images indicates that the dissociative ionization does not proceed sequentially by the formation and photodissociation of CS2+ in intense laser fields. (C) 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.elspec.2008.12.004

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  56. Time-resolved reaction imaging by intense few-cycle laser pulses and laser high-order harmonics Reviewed

    M. Fushitani, A. Matsuda, E. J. Takahashi, A. Hishikawa

    Journal of Physics: Conference Series   Vol. 185   2009

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    We discuss two novel approaches to visualize ultrafast dynamics of polyatomic molecules using few-cycle intense laser pulses and the high-order harmonics in the soft X-ray region, respectively. First, we present the real-time Coulomb explosion imaging of ultrafast isomerization of C 2D2 2+ by using intense few-cycle laser pulses (&lt
    10 fs, ∼1 PW/cm2, ∼800 nm) to show that the hydrogen migration proceeds recurrently in competition with the molecular dissociation. Secondly, we present a new experimental setup for the real-time inner-core excitation imaging, focusing on the generation and separation of the light source using the 59th order harmonic pulses (∼91 eV) and their characteristics. © 2009 IOP Publishing Ltd.

    DOI: 10.1088/1742-6596/185/1/012009

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  57. Femtosecond pump-probe 2D optical Kerr effect spectroscopy of molecular hydrogen crystals Reviewed

    Falk Königsmann, Mizuho Fushitani, Nina Owschimikow, David T. Anderson, Nikolaus Schwentner

    Chemical Physics Letters   Vol. 458 ( 4-6 ) page: 303 - 307   2008.6

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    Femtosecond pump-probe 2D (wavelength and delay) optical Kerr effect (OKE) spectroscopy is used to measure laser induced birefringence in parahydrogen and normal hydrogen crystals at 4.2 K. At the probe center wavelength the OKE signal reveals underdamped sinusoidal modulations at frequencies corresponding to the Raman-active transverse optical phonon mode of solid parahydrogen (36.8 cm-1) and normal hydrogen (38.5 cm-1), respectively. For parahydrogen crystals, at small shifts away from the probe center wavelength the OKE signal displays high frequency oscillations (355 cm-1) which correspond to J = 2 rotons with a 94 fs time period. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.cplett.2008.04.123

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  58. Control of chromophore-to-bath coupling by interferometry: Cl<inf>2</inf> vibrational wave packets in solid Ar Reviewed

    M. Fushitani, M. Bargheer, M. Gühr, H. Ibrahim, N. Schwentner

    Journal of Physics B: Atomic, Molecular and Optical Physics   Vol. 41 ( 7 )   2008.4

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    Electronic and vibrational coherences in the B 3Π(0 +u) ← X1Σ+g transition of chlorine (Cl2) molecules doped in an argon matrix are investigated by exciting with a pulse pair whose relative phase is scanned for every time delay step. The spacing and position of the generated spectral comb are controlled by the delay and relative phase of the pulses. The B 3Π(0+u) ← X1Σ +g excitation spectrum shows a progression of zero phonon lines which are decoupled from the lattice and of phonon side bands which originate from a concerted excitation of intramolecular and lattice vibrations. The molecular anharmonicity is compensated for by applying a negative chirp difference of the two pulses, which leads to an asymmetry in the signal around time zero. Absolute phase values are determined from spectral positions in the measured comb patterns. They are used to calculate fringe patterns and to simulate interferograms by a multiplication with the excitation spectrum which are compared with the measured ones in detail. From simulated interferograms of zero phonon lines and phonon side bands, we show that the two contributions can be selected with a large contrast by a time delay of two molecular vibrational periods. © 2008 IOP Publishing Ltd.

    DOI: 10.1088/0953-4075/41/7/074013

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  59. Nuclear spin conversion of methane in solid parahydrogen Reviewed

    Yuki Miyamoto, Mizuho Fushitani, Daisuke Ando, Takamasa Momose

    Journal of Chemical Physics   Vol. 128 ( 11 )   2008.3

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    The nuclear spin conversion of C H4 and C D4 isolated in solid parahydrogen was investigated by high resolution Fourier transform infrared spectroscopy. From the analysis of the temporal changes of rovibrational absorption spectra, the nuclear spin conversion rates associated with the rotational relaxation from the J=1 state to the J=0 state for both species were determined at temperatures between 1 and 6 K. The conversion rate of C D4 was found to be 2-100 times faster than that of C H4 in this temperature range. The faster conversion in C D4 is attributed to the quadrupole interaction of D atoms in C D4, while the conversion in C H4 takes place mainly through the nuclear spin-nuclear spin interaction. The conversion rates depend on crystal temperature strongly above 3.5 K for C H4 and above 2 K for C D4, while the rates were almost constant below these temperatures. The temperature dependence indicates that the one-phonon process is dominant at low temperatures, while two-phonon processes become important at higher temperatures as a cause of the nuclear spin conversion. © 2008 American Institute of Physics.

    DOI: 10.1063/1.2889002

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  60. Acetylene-vinylidene isomerization in ultrashort intense laser fields studied by triple ion-coincidence momentum imaging Reviewed

    Akiyoshi Hishikawa, Akitaka Matsuda, Eiji J. Takahashi, Mizuho Fushitani

    JOURNAL OF CHEMICAL PHYSICS   Vol. 128 ( 8 )   2008.2

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    The isomerization of acetylene via hydrogen migration in intense laser fields (8 X 10 14 W/cm(2)) has been investigated by coincidence momentum imaging of the three-body Coulomb explosion process, C(2)H(2)(3+)-&gt; H(+)C(+)CH(+). When ultrashort (9 fs) laser pulses are used, the angle between the momenta of C(+) and H(+) fragments exhibits a sharp distribution peaked at a small angle (similar to 20 degrees), showing that the hydrogen atom remains near the original carbon site in the acetylene configuration. On the other hand, a significantly broad distribution extending to larger momentum angles (similar to 120 degrees) is observed when the pulse duration is increased to 35 fs, indicating that the ultrafast isomerization to vinylidene is induced in the longer laser pulse, (c) 2008 American Institute of Physics.

    DOI: 10.1063/1.2828557

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  61. Visualizing recurrently migrating hydrogen in acetylene dication by intense ultrashort laser pulses Reviewed

    Akiyoshi Hishikawa, Akitaka Matsuda, Mizuho Fushitani, Eiji J. Takahashi

    Physical Review Letters   Vol. 99 ( 25 )   2007.12

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    We demonstrate the visualization of ultrafast hydrogen migration in deuterated acetylene dication (C2D22+) by employing the pump-probe Coulomb explosion imaging with sub-10-fs intense laser pulses (9 fs, 0.13PW/cm2, 800 nm). It is shown, from the temporal evolution of the momenta of the fragment ions produced by the three-body explosion, C2D23+→D++C++CD+, that the migration proceeds in a recurrent manner: The deuterium atom first shifts from one carbon site to the other in a short time scale (∼90fs) and then migrates back to the original carbon site by 280 fs, in competition with the molecular dissociation. © 2007 The American Physical Society.

    DOI: 10.1103/PhysRevLett.99.258302

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  62. In situ photolysis of CD3I in solid orthodeuterium Reviewed

    Mizuho Fushitani, Yuki Miyamoto, Hiromichi Hoshina, Takamasa Momose

    JOURNAL OF PHYSICAL CHEMISTRY A   Vol. 111 ( 49 ) page: 12629 - 12634   2007.12

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    Photochemical reactions of molecules in solid orthodeuterium (o-D-2) have been studied by high-resolution infrared spectroscopy and compared with previous results obtained in solid parahydrogen (p-H-2). Ultraviolet photoplysis of CD3I molecules in solid o-D2 yielded CD3 radicals and iodine atoms efficiently, which indicates a small cage effect in solid o-D2, as in the case of solid p-H2. The Fourier transform infrared spectrum of the nu(3) vibrational band of CD3 showed a rotational structure with additional splitting due to crystal field interactions. The magnetic dipole transition (2P(1/2) (&lt;-) P-2(3/2)) of the I atom isolated in solid o-D-2 was observed together with a strong rotational satellite of deuterium molecules through the electron-roton coupling in solid hydrogen. The tunneling reaction between CD3 and D-2 was not observed in a time scale of a few days, which gives the upper limit of the tunneling,reaction rate of 10(-8) s(-1) at 4.2 K.

    DOI: 10.1021/jp0761113

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  63. Coherent phonons in the zone boundary region of solid Ar doped with Cl2 Reviewed

    Mizuho Fushitani, Nikolaus Schwentner, Maike Schroeder, Oliver Kuehn

    ULTRAFAST PHENOMENA XV   Vol. 88   page: 618 - +   2007

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    We report on coherent zone-boundary phonons of solid Ar doped with Cl-2 in pump-probe spectra. Comparison with molecular dynamic simulation shows that specific motions of Ar atoms in the (100) plane are responsible for the observed oscillations.

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  64. Visualizing recurrently migrating hydrogen by few-cycle intense laser pulses Reviewed

    Akiyoshi Hishikawa, Akitaka Matsudal, Mizuho Fushitani, Eiji J. Takahashi

    XXV INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS   Vol. 88   2007

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IOP PUBLISHING LTD  

    Ultrafast hydrogen migration in deuterated acetylene dication (C(2)D(2)(2+)) is studied by the pump-probe Coulomb explosion imaging with few-cycle intense laser pulses (9 fs, 0.13 PW/cm(2), 800 nm). The temporal evolution of the momenta of the fragment ions produced by the three-body explosion, C(2)D(2)(3+) -&gt; D(+) + C(+) + CD(+), shows that the migration proceeds in a recurrent manner: The deuterium atom first shifts from one carbon site to the other in a short time scale (similar to 90 fs), and then migrates back to the original carbon site by 280 fs, in competition with the molecular dissociation.

    DOI: 10.1088/1742-6596/88/1/012056

    Web of Science

  65. Coherence and control of molecular dynamics in rare gas matrices

    Bargheer Matias, Borowski Alexander, Cohen Arik, Fushitani Mizuho, Gerber R. Benny, Guehr Markus, Hamm Peter, Ibrahim Heide, Kiljunen Toni, Korolkov Mikhail V., Kuehn Oliver, Manz Joern, Schmidt Burkhard, Schroeder Maike, Schwentner Nikolaus

    ANALYSIS AND CONTROL OF ULTRAFAST PHOTOINDUCED REACTIONS   Vol. 87   page: 257 - 385   2007

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  66. Coherent phonons in the zone boundary region of solid Ar doped with Cl2

    Fushitani Mizuho, Schwentner Nikolaus, Schroeder Maike, Kuehn Oliver

    ULTRAFAST PHENOMENA XV   Vol. 88   page: 618 - +   2007

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  67. Correlation between nuclear spin ratio of cyclic C3H2 and chemical evolution in TMC-1 cores

    Morisawa Yusuke, Fushitani Mizuho, Kato Yoshiyasu, Hoshina Hiromichi, Simizu Zenzo, Watanabe Shiori, Miyamoto Yuki, Kasai Yasuko, Kawaguchi Kentarou, Momose Takamasa

    ASTROPHYSICAL JOURNAL   Vol. 642 ( 2 ) page: 954 - 965   2006.5

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  68. Correlation between nuclear spin ratio of cyclic C3H2 and chemical evolution in TMC-1 cores Reviewed

    Yusuke Morisawa, Mizuho Fushitani, Yoshiyasu Kato, Hiromichi Hoshina, Zenzo Simizu, Shiori Watanabe, Yuki Miyamoto, Yasuko Kasai, Kentarou Kawaguchi, Takamasa Momose

    ASTROPHYSICAL JOURNAL   Vol. 642 ( 2 ) page: 954 - 965   2006.5

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    The ortho-to-para nuclear spin ratio of cyclopropenylidene ( cyclic C3H2) in TMC-1 cores was investigated using the 45 m radio telescope at Nobeyama Radio Observatory. We have observed four ortho lines (J(KaKc) = 2(12) - 1(01), 3(12) - 3(03), 3(21) - 3(12), and 3(30) - 3(21)) and four para lines (J(KaKc) 2(02) - 1(11), 2(11) - 2(02), 2(20) - 2(11), and 3(22) - 3(13)) of cyclic C3H2 in six cores in TMC-1. A statistical equilibrium analysis of the observed intensities revealed apparent correlation between the ortho-to-para ratio of cyclic C3H2 and chemical evolution of the molecular cloud; the ortho-to-para ratio in younger cores is less than 2, while that in older cores is close to the statistical ratio of 3. A simple chemical model calculation indicates that the correlation is ascribed to the conservation of nuclear spin angular momenta in chemical reactions relevant to the production, destruction, and reproduction of cyclic C3H2. Since cyclic C3H2 has been observed in a variety of sources, the ortho-to-para ratio of cyclic C3H2 may be a useful probe of chemical evolution of molecular clouds.

    DOI: 10.1086/501041

    Web of Science

  69. Chemical reactions in quantum crystals Reviewed

    T Momose, M Fushitani, H Hoshina

    INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY   Vol. 24 ( 3-4 ) page: 533 - 552   2005.12

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    Solid parahydrogen, known as a quantum crystal, is a novel matrix for the study of physical and chemical processes of molecules at low temperatures by high-resolution infrared spectroscopy. Ro-vibrational motion of molecules embedded in solid parahydrogen is well quantized on account of the weak interaction in the crystal. In addition, molecules are almost free from the cage effect because of the softness of the quantum crystal, so that a variety of chemical reactions could be observed for molecules in solid parahydrogen at liquid He temperatures. In this article, we survey our recent studies on photodissociation of methyl radicals and subsequent reactions in solid parahydrogen, and discuss ( 1) the nuclear spin selection rule in chemical reactions and ( 2) pure tunnelling reactions obtained from the analysis of the present system.

    DOI: 10.1080/01442350500444107

    Web of Science

  70. Search for CCH-, NCO-, and NCS- Negative Ions in Molecular Clouds Reviewed

    Y Morisawa, H Hoshina, Y Kato, Z Simizu, S Kuma, N Sogoshi, M Fushitani, S Watanabe, Y Miyamoto, T Momose, Y Kasai, K Kawaguchi

    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN   Vol. 57 ( 2 ) page: 325 - 334   2005.4

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OXFORD UNIV PRESS  

    Despite several suggestions concerning the existence of negatively charged molecules and negative atomic ions in molecular clouds, few attempts have been made to search for negative ions in molecular clouds. In the present study, we extensively searched for three negative molecular ions (CCH-, NCO-, and NCS-) in a dark cloud, L134N, using the Nobeyama 45-m radio telescope. The three negative ions are molecules whose rotational constants have been reported based on laboratory experiments. After a long accumulation, a trace amount of an unidentified emission line was detected at a frequency close to the theoretical prediction of the J = 1-0 transition of CCH-. If this unidentified line is attributable to CCH-, the observed emission intensity would provide an estimation of the column density of CCH- in L134N to be 1.0 x 10(11) cm(-2), which corresponds to a fractional abundance of 5 x 10(-12) relative to hydrogen. However, our recent observation using the IRAM 30-m telescope did not reproduce the J = 1-0 signal, nor detect any trace of the J = 2-1 transition. Thus, the identification of CCH- in L134N is not yet confirmed. As for other ions, signals of neither NCO- nor NCS- were detected in L134N. Although we also searched for the three negative ions in a translucent cloud, CB228, and a star-forming region, SgrB2, no signals were detected. The upper limit abundances of the ions in these clouds are discussed limit abundances of the ions in these clouds are discussed.

    DOI: 10.1093/pasj/57.2.325

    Web of Science

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    Other Link: http://orcid.org/0000-0002-0567-6881

  71. Wavepacket interferometry and wavepacket dynamics in condensed phase Reviewed

    M Bargheer, M Fushitani, M Guhr, N Schwentner

    ULTRAFAST PHENOMENA XIV   Vol. 79   page: 304 - 306   2005

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    The diatomic Cl-2 in solid Ar is examined to discuss the information obtained by wavepacket interferometry in condensed phase and to contrast it with femtosecond pump-probe and linear absorption spectra.

    Web of Science

  72. Wavepacket interferometry and wavepacket dynamics in condensed phase

    Bargheer M, Fushitani M, Guhr M, Schwentner N

    ULTRAFAST PHENOMENA XIV   Vol. 79   page: 304 - 306   2005

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  73. Tunneling chemical reactions in solid parahydrogen: Direct measurement of the rate constants of R+H-2 -&gt; RH+H (R=CD3,CD2H,CDH2,CH3) at 5 K Reviewed

    H Hoshina, M Fushitani, T Momose, T Shida

    JOURNAL OF CHEMICAL PHYSICS   Vol. 120 ( 8 ) page: 3706 - 3715   2004.2

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    Tunneling chemical reactions between deuterated methyl radicals and the hydrogen molecule in a parahydrogen crystal have been studied by Fourier transform infrared spectroscopy. The tunneling rates of the reactions R+H-2--&gt;RH+H (R=CD3,CD2H,CDH2) in the vibrational ground state were determined directly from the temporal change in the intensity of the rovibrational absorption bands of the reactants and products in each reaction in solid parahydrogen observed at 5 K. The tunneling rate of each reaction was found to differ definitely depending upon the degree of deuteration in the methyl radicals. The tunneling rates were determined to be 3.3x10(-6) s(-1), 2.0x10(-6) s(-1), and 1.0x10(-6) s(-1) for the systems of CD3, CD2H, and CDH2, respectively. Conversely, the tunneling reaction between a CH3 radical and the hydrogen molecule did not proceed within a week's time. The upper limit of the tunneling rate of the reaction of the CH3 radical was estimated to be 8x10(-8) s(-1). (C) 2004 American Institute of Physics.

    DOI: 10.1063/1.1642582

    Web of Science

  74. High-resolution spectroscopy and the analysis of ro-vibrational transitions of molecules in solid parahydrogen Reviewed

    T Momose, H Hoshina, M Fushitani, H Katsuki

    VIBRATIONAL SPECTROSCOPY   Vol. 34 ( 1 ) page: 95 - 108   2004.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    Solid parahydrogen provides a novel matrix for isolation spectroscopy of atoms and molecules. Ro-vibrational motion of molecules embedded in solid parahydrogen is well quantized on account of the weak interactions in the crystal and of the softness of the crystal being characteristic of quantum crystals. Most of the observed spectral linewidths are one or two orders of magnitude sharper than those observed in conventional rare gas matrices. The sharp linewidths make the parahydrogen crystal an excellent matrix for the study of ro-vibrational states and dynamics of dopant molecules in the condensed phase by high-resolution spectroscopy. In this article, we have summarized the most fundamental part of our study, that is, the theory of ro-vibrational states of dopant molecules in the crystal, which is necessary for the quantitative analysis of high-resolution infrared spectra. We also discuss what we have learned from the analysis of high-resolution infrared spectra in solid parahydrogen. These include perturbations to rotational motion of dopant molecules, reduction of rotational constants, vibrational dephasing and relaxation. Outstanding questions to be solved are also discussed herein. (C) 2003 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.vibspec.2003.06.001

    Web of Science

  75. Stimulated stokes downconversion in liquid and solid parahydrogen Reviewed

    B. J. McCall, A. J. Huneycutt, R. J. Saykally, C. M. Lindsay, T. Oka, M. Fushitani, Y. Miyamoto, T. Momose

    Applied Physics Letters   Vol. 82 ( 9 ) page: 1350 - 1352   2003.3

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    The results of investigations into the suitability of condensed-phase parahydrogen as a Raman-shifting medium for infrared cavity ringdown laser absorption spectroscopy were reported. The conversion of ∼10-ns pulses of 532-nm radiation into first-, second-, and third-order vibrational Stokes radiation in bulk liquid and solid parahydrogen after a single 11-cm pass was observed. It was found that the liquid H2 yields more efficient conversion than solid H2 with certain focal geometries, and in case of the solid, a collimated or loosely focused pump geometry was more efficient than a tight focus.

    DOI: 10.1063/1.1556560

    Web of Science

    Scopus

  76. Generation of infrared radiation by stimulated Raman scattering in para-hydrogen crystal at 5 K Reviewed

    Mizuho Fushitani, Susumu Kuma, Yuuki Miyamoto, Hiroyuki Katsuki, Tomonari Wakabayashi, Takamasa Momose, Andrey F. Vilesov

    Optics Letters   Vol. 28 ( 1 ) page: 37 - 39   2003.1

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    We report the preliminary results of our experiments with stimulated Raman scattering in para-hydrogen crystal aimed at developing a continuously tunable laboratory laser source of mid-infrared radiation. With laser pulses at 532 nm, a conversion efficieney for the first Stokes beam of as much as 20% in the forward direction was observed through a single-pass, 5-cm-long crystal. Generation of mid-infrared pulses at 4.5 μm was achieved by use of the output of a near-infrared pulsed laser (1.6 μm, 3 ns), and an absorption spectrum of gaseous CD4 molecules was successfully recorded. These results suggest use of the solid para-hydrogen Raman shifter as a promising light source for mid-infrared spectroscopy. © 2003 Optical Society of America.

    DOI: 10.1364/OL.28.000037

    Scopus

  77. Generation of infrared radiation by stimulated Raman scattering in para-hydrogen crystal at 5 K

    Fushitani M, Kuma S, Miyamoto Y, Katsuki H, Wakabayashi T, Momose T, Vilesov AF

    OPTICS LETTERS   Vol. 28 ( 1 ) page: 37 - 39   2003.1

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  78. A study on diffusion of H atoms in solid parahydrogen Reviewed

    M. Fushitani, T. Momose

    Low Temperature Physics   Vol. 29 ( 9-10 ) page: 740 - 743   2003

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    Diffusion of hydrogen atoms in solid parahydrogen was investigated using high-resolution infrared spectroscopy. Hydrogen atoms were produced as by-products of a photoinduced reaction of nitric oxides embedded in solid parahydrogen. The diffusion of the hydrogen atoms is mainly terminated by the reaction H+NO→HNO. The diffusion rate determined from the increase of the intensity of rotation-vibration transitions of HNO molecules was found to be two orders of magnitude larger than that determined by the self-recombination reaction of H+H→H2 in pure parahydrogen crystals. © 2003 American Institute of Physics.

    DOI: 10.1063/1.1614182

    Web of Science

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  79. Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy Reviewed

    H. Katsuki, M. Fushitani, T. Momose

    Low Temperature Physics   Vol. 29 ( 9-10 ) page: 832 - 837   2003

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    Pure vibrational overtone transitions of solid parahydrogen are studied using high-resolution laser spectroscopy. Extremely narrow spectral linewidth (∼20MHz) allows us to observe rich spectral structure that originates in subtle intermolecular interactions in the crystal. It is found that anisotropy of the distribution of zero-point lattice vibration of hydrogen molecules perturbs the energy levels of the vibrationally excited states significantly. A large amplitude of zero-point lattice vibration, an intrinsic propoerty of quantum solids, is directly observed from the present high-resolution spectroscopy. The first observation of a pure vibrational overtone transition of solid orthodeuterium is also discussed. © 2003 American Institute of Physics.

    DOI: 10.1063/1.1619353

    Web of Science

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  80. The P-2(1/2)<- P-2(3/2) transition of the iodine atom photoproduced from alkyl iodides in solid parahydrogen: detection of new absorptions

    Fushitani M, Momose T, Shida T

    CHEMICAL PHYSICS LETTERS   Vol. 356 ( 3-4 ) page: 375 - 382   2002.4

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  81. The <sup>2</sup>P<inf>1/2</inf> ← <sup>2</sup>P<inf>3/2</inf> transition of the iodine atom photoproduced from alkyl iodides in solid parahydrogen: Detection of new absorptions Reviewed

    Mizuho Fushitani, Takamasa Momose, Tadamasa Shida

    Chemical Physics Letters   Vol. 356 ( 3-4 ) page: 375 - 382   2002.4

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    Alkyl iodides were photolyzed in solid parahydrogen at about 5 K. The first photolysis with 253.7 nm photons yielded two products by reactions, RI + hv (253.7 nm) → Rfree + ·Ifree and (R·-·I), the latter being a complex between the radical R· and the iodine atom ·I. Subsequent photolysis with 193 nm photons activated the radical moiety in both products to induce a reaction, R· + H2 + hv (193 nm) → RH + ·H, which gave the products RHfree and (RH-·I). The radical R· and the alkane RH were characterized by the mid-IR absorption while the iodine atoms in ·Ifree and (R·-·I) and (RH-·I) were identified by the near IR absorption of the magnetic dipole transition of the atom. © 2002 Published by Elsevier Science B.V.

    DOI: 10.1016/S0009-2614(02)00354-8

    Scopus

  82. UV-photolysis of HI center dot center dot center dot CO2 complexes in solid parahydrogen: Formation of CO and H2O

    Fushitani M, Shida T, Momose T, Rasanen M

    JOURNAL OF PHYSICAL CHEMISTRY A   Vol. 104 ( 16 ) page: 3635 - 3641   2000.4

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  83. UV-photolysis of HI⋯CO<inf>2</inf> complexes in solid parahydrogen: Formation of CO and H<inf>2</inf>O Reviewed

    Mizuho Fushitani, Tadamasa Shida, Takamasa Momose, Markku Räsänen

    Journal of Physical Chemistry A   Vol. 104 ( 16 ) page: 3635 - 3641   2000.4

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    The photochemistry of (HI)m⋯(CO2)n (m, n = 1,2, ...) complexes trapped in solid parahydrogen was studied by Fourier transform infrared absorption spectroscopy. Photolysis of the HI in the HI⋯(CO2)n complexes results in the generation of carbon monoxide and water molecules along with iodine atoms. Analysis of the observed spectra leads to the conclusion that the energetic hydrogen atom produced by the photolysis of HI initiates the reaction with one of the CCh molecules in the complexes as H + CO2 → OH + CO, which is followed by the secondary reaction of OH radicals with the matrix hydrogen as OH + H2 → H2O + H. These four-atom reactions are of practical importance in combustion processes as well as of theoretical importance in fundamental chemical dynamics. The result of the present study shows the usefulness of the parahydrogen matrix for fundamental study of photochemistry with the use of weakly bound complexes. © 2000 American Chemical Society.

    Scopus

  84. Photoinduced reactions of methyl radical in solid parahydrogen

    Fushitani M, Sogoshi N, Wakabayashi T, Momose T, Shida T

    JOURNAL OF CHEMICAL PHYSICS   Vol. 109 ( 15 ) page: 6346 - 6350   1998.10

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  85. Photoinduced reactions of methyl radical in solid parahydrogen Reviewed

    Mizuho Fushitani, Norihito Sogoshi, Tomonari Wakabayashi, Takamasa Momose, Tadamasa Shida

    Journal of Chemical Physics   Vol. 109 ( 15 ) page: 6346 - 6350   1998

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    Photolysis of methyl iodide in solid parahydrogen (p-H2) at about 5 K is studied with ultraviolet light at 253.7 and 184.9 nm. It is found that the light at 253.7 nm produces only methyl radical, whereas the light at 184.9 nm yields both methyl radical and methane. The mechanism of the formation of the photoproducts is elucidated by analyzing the temporal behavior of the observed vibrational absorption. It is concluded that methyl radical in the ground state does not react with p-H2 molecules appreciably but that the radical in the electronic excited state of B̃(2A1′), accessible by reabsorption of 184.9 nm photons by the radical, decomposes to a singlet methylene CH2 ã(1A1) and a hydrogen atom (2S) and that the singlet methylene reacts with a p-H2 molecule to give methane. © 1998 American Institute of Physics.

    DOI: 10.1063/1.477276

    Scopus

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Books 2

  1. Progress in ultrafast intense laser science

    M. Fushitani, Y. Hikosaka, A. Matsuda, E. Shigemasa, A. Hishikawa( Role: Contributor ,  Chap. 9)

    Springer  2013.2  ( ISBN:3642350518

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    Total pages:239   Language:English

    CiNii Books

    ASIN

  2. Analysis and control of ultrafast photoinduced reactions

    M. Bargheer, A. Borowski, A. Cohen, M. Fushitani, R. B. Gerber, M. Gühr, P. Hamm, H. Ibrahim, T. Kiljunen, M. V. Korolkov, O. Kühn, J. Manz, B. Schmidt, M. Schröder, N. Schwentner( Role: Contributor ,  Chap. 4)

    Springer Berlin  2007.2  ( ISBN:3540680373

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    Total pages:860   Language:English

    CiNii Books

    ASIN

MISC 22

  1. Formation of Xe 4d Double-Core-Hole States in Intense EUV-FEL Fields Studied by Multielectron-Ion Coincidence Spectroscopy Invited

    M. Fushitani, Y. Hikoksaka, A. Hishikawa

    SPring8/SACLA_Research Frontiers 2020     page: 78 - 79   2021.8

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    Authorship:Lead author, Corresponding author   Language:English  

  2. 分子フラグメントのローミング過程をリアルタイムで捉える Invited

    遠藤友随, 伏谷瑞穂, 菱川明栄

    Japanese Scientists in Science 2020     page: 57   2021.3

  3. 強レーザーパルスを用いた量子状態の超高速多光子操作 Invited Reviewed

    伏谷瑞穂, 菱川明栄

    レーザー研究   Vol. 45 ( 8 ) page: 493 - 497   2017.8

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  4. レーザー高次高調波による分子ダイナミクスの超高速光電子分光 Invited Reviewed

    伏谷瑞穂, 菱川明栄

    レーザー研究   Vol. 43 ( 12 ) page: 818 - 822   2015.12

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  5. 極紫外自由電子レーザー場における原子の非線形過程 Invited Reviewed

    伏谷瑞穂, 彦坂泰正, 菱川明栄

    日本物理学会誌   Vol. 68 ( 12 ) page: 794 - 801   2013.12

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  6. 極紫外自由電子レーザー場における原子の非線形応答:2つの電子が拓く新しい光吸収経路 Invited

    伏谷瑞穂, 彦坂泰正, 松田晃孝, 森下亨, 繁政英治, 菱川明栄

    レーザ加工学会誌   Vol. 20   page: 54 - 57   2013

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  7. 次数選択したEUV領域レーザー高次高調波による超高速分光 Invited Reviewed

    伏谷瑞穂, 松田晃孝, 菱川明栄

    分光研究   Vol. 61   page: 98 - 100   2012

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  8. 光のゆらぎで探る:自由電子レーザー場中の原子 Invited Reviewed

    伏谷瑞穂, 彦坂泰正, 菱川明栄

    光アライアンス   Vol. 22 ( 10 ) page: 291 - 294   2011.10

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  9. 極紫外レーザー場におけるXe 原子の多電子-イオンコインシデンス分光: 非線形 DCH 状態生成過程の観測 Invited

    伏谷瑞穂, 松田晃孝, 彦坂泰正, 菱川明栄

    SPring-8/SACLA利用者情報   Vol. 25 ( 4 ) page: 272 - 277   2020.11

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  10. 17pAA-7 Observation of asymmetric molecular orbital of NO by phase-controlled two-color intense laser pulses

    Endo T, Ishihara A, Matsuda A, Fushitani M, Hishikawa A

    Meeting Abstracts of the Physical Society of Japan   Vol. 70 ( 0 )   2015

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    CiNii Article

  11. 27pTM-7 Nonresonant EUV-UV two-color two-photon ionization of He atoms

    Fushitani M, Hikosaka Y, Matsuda A, Endo T, Shigemasa E, Nagasono M, Sato T, Togashi T, Hishikawa A

    Meeting Abstracts of the Physical Society of Japan   Vol. 69 ( 0 )   2014

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  12. 27pEB-10 Ionization processes of polarized He(2^1P) atoms in intense laser fields

    Fushitani M, Matsuda A, Endo T, Toida Y, Morishita T, Nagasono M, Togashi T, Hikosaka Y, Hishikawa A

    Meeting Abstracts of the Physical Society of Japan   Vol. 68 ( 0 )   2013

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  13. 数サイクル強レーザー場におけるNO分子のイオン化異方性:π‐σ軌道遷移の効果

    遠藤友随, 伏谷瑞穂, 松田晃孝, 安池智一, 森下亨, 菱川明栄

    分子科学討論会講演プログラム&amp;要旨(Web)   Vol. 7th   page: ROMBUNNO.2P017 (WEB ONLY)   2013

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    J-GLOBAL

  14. 偏極He原子の強レーザー場イオン化におけるコヒーレント2光子共鳴過程の観測

    伏谷瑞穂, 伏谷瑞穂, 松田晃孝, 遠藤友随, 樋田裕斗, 森下亨, 永園充, 富樫格, 彦坂泰正, 彦坂泰正, 菱川明栄, 菱川明栄

    分子科学討論会講演プログラム&amp;要旨(Web)   Vol. 7th   page: ROMBUNNO.2A17 (WEB ONLY)   2013

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    J-GLOBAL

  15. Polarization dependence in multiphoton ionization processes of polarized He(2^1P) atoms

    Fushitani M, Matsuda A, Endo T, Toida Y, Morishita T, Nagasono M, Togashi T, Hikosaka Y, Hishikawa A

    Meeting Abstracts of the Physical Society of Japan   Vol. 68 ( 0 )   2013

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  16. 27aAB-1 Fragment anisotropy on dissociative ionization of electronically excited NO in few-cycle intense laser fields

    Endo Tomoyuki, Fushitani Mizuho, Matsuda Akitaka, Hishikawa Akiyoshi

    Meeting Abstracts of the Physical Society of Japan   Vol. 67 ( 0 )   2012

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  17. 励起状態NOの解離性イオン化過程におけるフラグメント空間異方性:軌道対称性の効果

    遠藤友随, 伏谷瑞穂, 松田晃孝, 菱川明栄

    分子科学討論会講演プログラム&amp;要旨(Web)   Vol. 6th   page: ROMBUNNO.3A06 (WEB ONLY)   2012

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    J-GLOBAL

  18. 偏極He(2<sup>1</sup>P)原子の強レーザー場イオン化ダイナミクス

    伏谷瑞穂, 伏谷瑞穂, 松田晃孝, 遠藤友随, 樋田裕斗, 永園充, 富樫格, 彦坂泰正, 彦坂泰正, 菱川明栄, 菱川明栄

    分子科学討論会講演プログラム&amp;要旨(Web)   Vol. 6th   page: ROMBUNNO.4P005 (WEB ONLY)   2012

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    J-GLOBAL

  19. 極紫外自由電子レーザー場における原子のシングルショット光電子分光 Invited Reviewed

    彦坂泰正, 伏谷瑞穂, 菱川明栄

    しょうとつ   Vol. 9 ( 1 ) page: 5 - 10   2012

  20. FEL同期レーザーを用いた希ガスの時間分解シングルショット光電子分光

    伏谷瑞穂, 伏谷瑞穂, 彦坂泰正, 彦坂泰正, 松田晃孝, 松田晃孝, 遠藤友随, 繁政英治, 繁政英治, 永園充, 佐藤堯洋, 登野健介, 富樫格, 大橋治彦, 大橋治彦, 仙波泰徳, 矢橋牧名, 石川哲也, 菱川明栄, 菱川明栄, 菱川明栄

    分子科学討論会講演プログラム&amp;要旨(Web)   Vol. 5th   page: ROMBUNNO.4P014 (WEB ONLY)   2011

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    Language:Japanese  

    J-GLOBAL

  21. クーロン爆発イメージングによる分子内水素移動反応の実時間可視化 Invited

    菱川明栄, 松田晃孝, 伏谷瑞穂, 高橋栄治

    レーザ加工学会誌   Vol. 15   page: 46 - 49   2008

  22. Ultrafast dynamics of halogens in rare gas solids

    M. Guehr, M. Bargheer, M. Fushitani, T. Kiljunen, N. Schwentner

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   Vol. 9 ( 7 ) page: 779 - 801   2007

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    Language:English   Publishing type:Book review, literature introduction, etc.   Publisher:ROYAL SOC CHEMISTRY  

    We perform time resolved pump-probe spectroscopy on small halogen molecules ClF, Cl-2, Br-2, and I-2 embedded in rare gas solids (RGS). We find that dissociation, angular depolarization, and the decoherence of the molecule is strongly influenced by the cage structure. The well ordered crystalline environment facilitates the modelling of the experimental angular distribution of the molecular axis after the collision with the rare gas cage. The observation of many subsequent vibrational wave packet oscillations allows the construction of anharmonic potentials and indicate a long vibrational coherence time. We control the vibrational wave packet revivals, thereby gaining information about the vibrational decoherence. The coherence times are remarkable larger when compared to the liquid or high pressure gas phase. This fact is attributed to the highly symmetric molecular environment of the RGS. The decoherence and energy relaxation data agree well with a perturbative model for moderate vibrational excitation and follow a classical model in the strong excitation limit. Furthermore, a wave packet interferometry scheme is applied to deduce electronic coherence times. The positions of those cage atoms, excited by the molecular electronic transitions are modulated by long living coherent phonons of the RGS, which we can probe via the molecular charge transfer states.

    DOI: 10.1039/b609058n

    Web of Science

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Presentations 33

  1. Nonlinear Atomic Processes in Intense EUV-FEL Fields Studied by Multielectron-Ion Coincidence Spectroscopy Invited

    Mizuho Fushitani

    6th International Symposium on Intense Field, Short Wavelength Atomic and Molecular Processes (ISWAMP2021) 

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    Event date: 2021.7

    Presentation type:Oral presentation (invited, special)  

  2. 極紫外自由電子レーザーを用いた超高速非線形原子過程の光電子計測 Invited

    伏谷瑞穂

    第27回 FELとHigh-Power Radiation 研究会 

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    Event date: 2021.3

    Presentation type:Oral presentation (invited, special)  

  3. Ultrafast Photoelectron Spectroscopy of Rydberg Xe+ by using EUV-FEL and Synchronized NIR Laser Pulses Invited

    Mizuho Fushitani

    SACLA Users' Meeting 2021, Breakout Sessions A1: Synchronized Optical Lasers 

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    Event date: 2021.3

    Presentation type:Oral presentation (invited, special)  

  4. 極紫外自由電子レーザー場中Xe原子の多電子-イオンコインシデンス分光 Invited

    伏谷瑞穂

    一般社団法人レーザー学会学術講演会 第41回年次大会: シンポジウム「高輝度短波長光源」 

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    Event date: 2021.1

    Presentation type:Oral presentation (invited, special)  

  5. 単一次数レーザー高次高調波を用いた分子波束ダイナミクスの実時間光電子分光 Invited

    伏谷瑞穂

    日本物理学会 2019年秋季大会 シンポジウム講演「レーザー光源の進化と原子分子物理学の深化」 

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    Event date: 2019.9

    Presentation type:Oral presentation (invited, special)  

  6. Ion-Electron Spectroscopy of Nonlinear Atomic Processes in Intense EUV-FEL Fields Invited

    Mizuho Fushitani

    The XXXI International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC) 

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    Event date: 2019.7

    Presentation type:Oral presentation (invited, special)  

  7. 時間コヒーレントなレーザーVUV光源の発生と応用 Invited

    伏谷瑞穂

    第31回日本放射光学会年会・放射光科学合同シンポジウム 企画講演「VUV領域の空間および時間コヒーレンス光源とそれを使ったサイエンス」 

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    Event date: 2018.1

    Presentation type:Oral presentation (invited, special)  

  8. 極紫外自由電子レーザーで探る超高速原子分子過程 Invited

    伏谷瑞穂

    分子研シンポジウム 2017 

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    Event date: 2017.6

    Presentation type:Oral presentation (invited, special)  

  9. Time-Resolved Photoelectron Spectroscopy by Single-Order Laser High Harmonics in VUV Invited

    Mizuho Fushitani

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    Event date: 2013.7

    Presentation type:Oral presentation (invited, special)  

  10. Photoelectron Spectroscopy of Atoms and Molecules by Using FEL and Laser High-Order Harmonics Invited

    Mizuho Fushitani

    The 12th International Conference on Electron Spectroscopy and Structure (ICESS) 

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    Event date: 2012.9

    Presentation type:Oral presentation (invited, special)  

  11. Mapping Electron Correlations in Nonlinear Ionization of Xe 4d Double-Core-Hole States by Multielectron-Ion Coincidence Spectroscopy Invited

    Mizuho Fushitani

    The 3rd IRCCS - The 2nd Reaction Infography Joint International Symposium 

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    Event date: 2020.1 - 2020.2

    Presentation type:Oral presentation (invited, special)  

  12. Nonlinear Inner-Core Excitations of Atoms in Intense EUV-FEL Fields Invited

    Mizuho Fushitani

    The 23rd East Asian Workshop on Chemical Dynamics (EAWCD 2019) 

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    Event date: 2019.9

    Presentation type:Oral presentation (invited, special)  

  13. Electron-Ion Coincidence Spectroscopy of Xe Intense EUV Laser Fields Invited

    Mizuho Fushitani

    International workshop on theory for attosecond quantum dynamics (IWTAQD) 21 

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    Event date: 2019.6

    Presentation type:Oral presentation (invited, special)  

  14. Ultrafast XUV-NIR Photoelectron Spectroscopy of Electron-Core Wave Packet Dynamics in Rydberg N2 Invited

    Mizuho Fushitani

    International symposium on ultrafast electronic and structural dynamics 

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    Event date: 2019.3

    Presentation type:Oral presentation (invited, special)  

  15. Multiphoton Ionization of Atoms in Intense XUV-FEL Fields Studied by Single-Shot Photoelectron Spectroscopy Invited

    Mizuho Fushitani

    The 9th Asian Workshop on Generation and Application of Coherent XUV and X-ray Radiation (9th AWCXR) 

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    Event date: 2018.10

    Presentation type:Oral presentation (invited, special)  

  16. Ultrafast Laser Spectroscopy for Reaction Imaging Invited

    Mizuho Fushitani

    Workshop to Discuss the Future of Gas Phase Research 

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    Event date: 2018.8 - 2018.9

    Presentation type:Oral presentation (invited, special)  

  17. Ultrafast Nonlinear Ionization of Atoms in Intense EUV/NIR Laser Fields Invited

    Mizuho Fushitani

    Conference on Laser and Synchrotron Radiation Combination Experiment 2018 (LSC2018) 

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    Event date: 2018.4

    Presentation type:Oral presentation (invited, special)  

  18. 強レーザー場による原子の超高速多光子操作 Invited

    伏谷瑞穂

    第31回日本放射光学会年会・放射光科学合同シンポジウム 

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    Event date: 2018.1

    Presentation type:Oral presentation (invited, special)  

  19. レーザーベースのVUV光源の発生と応用 Invited

    伏谷瑞穂

    第31回 回折限界VUV光源研究会 

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    Event date: 2017.6

    Presentation type:Oral presentation (invited, special)  

  20. Ultrafast EUV Photoelectron Spectroscopy of Molecular Rydberg Wavepacket Dynamics by Single-Order Laser High Harmonics Invited

    Mizuho Fushitani

    The 77th Okazaki Conference Series: International Symposium on Ultrafast Dynamics in Molecular and Material Sciences 

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    Event date: 2017.3

    Presentation type:Oral presentation (invited, special)  

  21. Femtosecond Two-Photon Rabi Oscillations in He Invited

    Mizuho Fushitani

    The Asian International Seminar on Atomic and Molecular Physics (AISAMP)12 

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    Event date: 2016.9

    Presentation type:Oral presentation (invited, special)  

  22. 極紫外レーザー高次高調波による分子ダイナミクスの超高速光電子分光 Invited

    伏谷瑞穂, Liu Chien-Nan, 森下 亨, 菱川明栄

    一般社団法人レーザー学会学術講演会 第36回年次大会 

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    Event date: 2016.1

    Presentation type:Oral presentation (invited, special)  

  23. Ultrafast electron dynamics of He in intense EUV/NIR laser fields Invited

    Mizuho Fushitani

    The 19th East Asian Workshop on Chemical Dynamics (19EAWCD) 

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    Event date: 2015.10

    Presentation type:Oral presentation (invited, special)  

  24. Ion-Coincidence Momentum Imaging of Three-Body Coulomb Explosion of Formaldehyde in Ultrashort Intense Laser Fields Invited

    Mizuho Fushitani

    The 11th International Conference of Computational Methods in Sciences and Engineering (ICCMSE 2015) 

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    Event date: 2015.3

    Presentation type:Oral presentation (invited, special)  

  25. Nonlinear Ionization of Atoms in Intense EUV Laser Fields Studied by Single-Shot Photoelectron Spectroscopy Invited

    Mizuho Fushitani

    The 1st Conference on Laser and Synchrotron Radiation Combination Experiment (LSC) 2014 

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    Event date: 2014.4

    Presentation type:Oral presentation (invited, special)  

  26. Multiphoton Ionization of He Studied by Time-Resolved Single-Shot Photoelectron Spectroscopy Invited

    Mizuho Fushitani

    The 10th International Workshop on Theory for Attosecond Quantum Dynamics (IWTAQD10) 

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    Event date: 2014.1 - 2014.2

    Presentation type:Oral presentation (invited, special)  

  27. 単一次数レーザー高次高調波による実時間光電子分光 Invited

    伏谷瑞穂

    日本分光学会平成24年度中部支部東海・信州ブロック分子科学研究所講演会 

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    Event date: 2013.3

    Presentation type:Oral presentation (invited, special)  

  28. Photoelectron Spectroscopy of Atoms in EUV FEL Fields Invited

    Mizuho Fushitani

    The 7th International Workshop on Theory for Attosecond Quantum Dynamics (IWTAQD7) 

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    Event date: 2013.1

    Presentation type:Oral presentation (invited, special)  

  29. EUV and Soft X-ray Photoelectron Spectroscopy of Atoms and Molecules by Using Single-Order Laser High-Harmonics Invited

    Mizuho Fushitani

    The 7th Asian Conference on Ultrafast Phenomena (ACUP) 

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    Event date: 2012.2

    Presentation type:Oral presentation (invited, special)  

  30. Shot-by-Shot Photoelectron Spectroscopy of Rare Gas Atoms in Intense EUV-FEL Fields Invited

    Mizuho Fushitani

    2011 International Workshop on Photoionization (IWP) 

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    Event date: 2011.5

    Presentation type:Oral presentation (invited, special)  

  31. Generation and Application of Single-Order Harmonics for Ultrafast Time-Resolved Spectroscopy Invited

    Mizuho Fushitani

    The 10th Joint Seminar between Münster University and Nagoya University 

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    Event date: 2010.11 - 2010.12

    Presentation type:Oral presentation (invited, special)  

  32. Generation and Application of Single-Order Harmonics for Ultrafast Reaction Probing Invited

    Mizuho Fushitani

    The 14th East Asian Workshop on Chemical Dynamics (EAWCD) 

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    Event date: 2010.5

    Presentation type:Oral presentation (invited, special)  

  33. レーザー高次高調波を用いた超高速反応イメージング法の開発 Invited

    伏谷瑞穂

    第4回 先端的レーザー分光の若手シンポジウム 

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    Event date: 2008.12

    Presentation type:Oral presentation (invited, special)  

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KAKENHI (Grants-in-Aid for Scientific Research) 10

  1. 高強度XFELを用いたサイト選択的化学分析法の開発

    Grant number:20K05549  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    伏谷 瑞穂

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    Authorship:Principal investigator 

    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    本研究では,内殻二重空孔状態に基づく新たな分子内サイト選択的化学分析法の基盤技術の開発を目的とする。まずは,現有の電子分析装置に新たにイオン捕集機構を統合し,電子だけでなく解離イオンをも高精度で捉える電子・イオンコインシデンス計測の導入を行う。続いて,検出効率の改善による真のコインシデンス事象の向上および偽事象の原因となる残留ガスの抑制に取り組む。本手法により,内殻電子が関与する非線形光学現象の基礎過程を明らかにするとともに,内殻二重空孔状態を利用することで分子内における特定の原子サイトを選択的に分析できることを実証する。

  2. Development of electron dynamics imaging technique based on understanding of laser tunneling ionization process

    Grant number:16H04029  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    HISHIKAWA Akiyoshi, FUSHITANI Mizuho, MATSUDA Akitaka

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    We studied laser tunneling ionization of molecules in ultrashort intense laser fields to develop an electron dynamics imaging technique. Two observables of tunneling ionization, (1) ionization rates and (2) electron transversal momentum distributions (TMDs), were measured to compare with predictions by tunneling ionization theories. It was demonstrated that one can (1) read out the asymmetric 2π highest occupied molecular orbital (HOMO) of nitric oxide by using shaped intense laser pulses and (2) obtain the TMDs of deuterium molecule from the cross sections of a photoelectron torus in the molecular frame.

  3. Real-time probing atomic core-hole decay

    Grant number:15K05228  2015.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Hikosaka Yasumasa

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    In this research, we aimed to observe the electron emission process of atoms by using free electron laser SACLA of RIKEN, combined use of free electron laser (FEL) and near infrared (NIR) femtosecond laser. Using X-ray beamline BL 3 at SACLA, side-band formation by NIR laser was observed in the Auger electron spectra of rare gases. The sideband intensity enables us to optimize the spatial and temporal overlap by of the two lasers. In addition, a highly-excited states of single-charged xenon was probed by using NIR laser in combination with soft X-ray beamline BL1, and their decay was probed in real time.

  4. Construction of ultrafast spectroscopy system for evolution of interstellar molecules

    Grant number:26287140  2014.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    Fushitani Mizuho

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    Authorship:Principal investigator 

    Grant amount:\17160000 ( Direct Cost: \13200000 、 Indirect Cost:\3960000 )

    We have constructed an advanced spectroscopic measurement system using extreme ultraviolet and mid infrared femtosecond laser pulses to track in real time chemical reaction processes of molecules containing hydrogen (proton) which is one of the key elements in the evolution of molecular clouds in interstellar space. In the present study, we have succeeded in developing ultrashort laser pulses at 133 and 80 nm which correspond to the 3rd and 5th order harmonics of the fundamental laser at 400 nm, and applied to time-resolved spectroscopy of ultrafast molecular dynamics with high temporal resolutions.

  5. Investigation of the multielectron dynamics of chemical reactions based on time-dependent molecular orbital picture: Its development and experimental verification

    Grant number:24245001  2012.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    Kono Hirohiko

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    We investigated the multielectron dynamics of molecules such as CO and N2 in intense laser fields by using electronic and nuclear wavepacket propagation methods and proposed laser control schemes of the generation of higher order harmonics which is a source of attosecond pulses. We experimentally demonstrated that the two C-O bonds of CO2 can be asymmetrically cleaved by changing the phase between two-color pulses, which provides a new possibility of the laser control of chemical reactions. We also established a method to simulate XFEL-induced Coulomb explosion of molecules for time-resolved molecular imaging.The results of application to iodouracil etc. are in good agreement with the experimental results.

  6. In-situ observation of molecules in intense laser fields by ultrafast photoelectron spectroscopy

    Grant number:24350006  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    HISHIKAWA Akiyoshi

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    A system for ultrafast photoelectron spectroscopy was constructed using laser high-order harmonics in extreme ultraviolet, which was successfully applied to femtosecond pump-probe real-time tracking of ultrafast electron wavepacket dynamics. The effect of electronic excitation in molecular dynamics in intense laser fields was studied by momentum imaging of dissociative ionization of UV-excited molecules. Based on the finding, a novel method to visualize electron dynamics in molecules in real time was proposed. Photoelectron spectroscopy of molecules before and after the irradiation of an intense laser pulse was performed, revealing selective excitation of specific electronic states in the laser field.

  7. Multi-ionization of atoms and molecules in intense short-wavelength laser fields

    Grant number:24540425  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    HIKOSAKA Yasumasa

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    Multi-photon absorption processes of atoms in intense short-wavelength laser fields has been studied by photoelectron spectroscopy. We have applied the magnetic bottle electron spectroscopic method, to achieve effective photoelectron spectroscopic researches with light sources of ultra intense and high photon energy. We have studied the three-photon double ionization of Ar in intense extreme ultraviolet free-electron laser fields over a photon energy range of 19.6-22.0 eV. It is found that the double ionization to Ar2+ proceeds sequentially via the formation of singly charged Ar+ states and is enhanced around photon energies of 20.5 and 21.5 eV. Two types of resonances are identified in the two-photon ionization of the Ar+ states: (i) resonances to intermediate states at the one-photon energy level and (ii) those to autoionizing states above the Ar2+ ionization threshold.

  8. レーザー高次高調波を用いたコヒーレント反応制御に関する研究

    2012

    昭和報公会  昭和報公会学術研究助成金 

    伏谷瑞穂

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    Authorship:Principal investigator 

  9. 時間分解光電子ホログラフィーによる超高速表面反応イメージング法の開発

    2010 - 2011

    松尾学術振興財団  松尾学術研究助成金 

    伏谷瑞穂

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    Authorship:Principal investigator 

  10. Real-time Coulomb explosion imaging of molecular orbitals with intense laser fields

    Grant number:19750014  2007 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    FUSHITANI Mizuho

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    Authorship:Principal investigator 

    Grant amount:\3610000 ( Direct Cost: \3400000 、 Indirect Cost:\210000 )

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