Faculty Profiles - FUSHITANI, Mizuho

Papers - FUSHITANI, Mizuho

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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

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

Mizuho Fushitani, Takamasa Momose

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

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

UV-photolysis of HI•••CO2 complexes in solid parahydrogen:: Formation of CO and H2O

Fushitani, M; Shida, T; Momose, T; Räsänen, M

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

Distinguishing the XUV-induced Coulomb explosion dynamics of iodobenzene using covariance analysis Reviewed Open Access

Tiffany Walmsley, Felix Allum, James R Harries, Yoshiaki Kumagai, Suzanne Lim, Joseph McManus, Kiyonobu Nagaya, Mathew Britton, Mark Brouard, Philip Bucksbaum, Mizuho Fushitani, Ian Gabalski, Tatsuo Gejo, Paul Hockett, Andrew J Howard, Hiroshi Iwayama, Edwin Kukk, Chow-shing Lam, Russell S Minns, Akinobu Niozu, Sekito Nishimuro, Johannes Niskanen, Shigeki Owada, Weronika O Razmus, Daniel Rolles, James Somper, Kiyoshi Ueda, James Unwin, Shin-ichi Wada, Joanne L Woodhouse, Ruaridh Forbes, Michael Burt, Emily M Warne

Journal of Physics B: Atomic, Molecular and Optical Physics Vol. 57 ( 23 ) page： 235101 - 235101 2024.12

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing

Abstract

The primary and secondary fragmentation dynamics of iodobenzene following its ionization at 120 eV were determined using three-dimensional velocity map imaging and covariance analysis. Site-selective iodine 4d ionization was used to populate a range of excited polycationic parent states, which primarily broke apart at the carbon-iodine bond to produce I+ with phenyl or phenyl-like cations (C n H or C n H , with n = 1 – 6 and x = 1 – 5). The molecular products were produced with varying degrees of internal excitation and dehydrogenation, leading to stable and unstable outcomes. This further allowed the secondary dynamics of intermediates to be distinguished using native-frame covariance analysis, which isolated these processes in their own centre-of-mass reference frames. The mass resolution of the imaging mass spectrometer used for these measurements enabled the primary and secondary reaction channels to be specified at the level of individual hydrogen atoms, demonstrating the ability of covariance analysis to comprehensively measure the competing fragmentation channels of aryl cations, including those involving intermediate steps.

DOI： 10.1088/1361-6455/ad8799

Open Access

Web of Science

Scopus

Other Link： https://iopscience.iop.org/article/10.1088/1361-6455/ad8799/pdf

Time-Resolved Probing of the Iodobenzene C-Band Using XUV-Induced Electron Transfer Dynamics Reviewed International coauthorship International journal Open Access

James Unwin, Weronika O. Razmus, Felix Allum, James R. Harries, Yoshiaki Kumagai, Kiyonobu Nagaya, Mathew Britton, Mark Brouard, Philip Bucksbaum, Mizuho Fushitani, Ian Gabalski, Tatsuo Gejo, Paul Hockett, Andrew J. Howard, Hiroshi Iwayama, Edwin Kukk, Chow-shing Lam, Joseph McManus, Russell S. Minns, Akinobu Niozu, Sekito Nishimuro, Johannes Niskanen, Shigeki Owada, James D. Pickering, Daniel Rolles, James Somper, Kiyoshi Ueda, Shin-ichi Wada, Tiffany Walmsley, Joanne L. Woodhouse, Ruaridh Forbes, Michael Burt, Emily M. Warne

ACS Physical Chemistry Au Vol. 4 ( 6 ) page： 620 - 631 2024.8

Exploring the ultrafast and isomer-dependent photodissociation of iodothiophenes via site-selective ionization Reviewed International coauthorship International journal Open Access

Weronika O. Razmus, Felix Allum, James Harries, Yoshiaki Kumagai, Kiyonobu Nagaya, Surjendu Bhattacharyya, Mathew Britton, Mark Brouard, Philip H. Bucksbaum, Kieran Cheung, Stuart W. Crane, Mizuho Fushitani, Ian Gabalski, Tatsuo Gejo, Aaron Ghrist, David Heathcote, Yasumasa Hikosaka, Akiyoshi Hishikawa, Paul Hockett, Ellen Jones, Edwin Kukk, Hiroshi Iwayama, Huynh V. S. Lam, Joseph W. McManus, Dennis Milesevic, Jochen Mikosch, Shinichirou Minemoto, Akinobu Niozu, Andrew J. Orr-Ewing, Shigeki Owada, Daniel Rolles, Artem Rudenko, Dave Townsend, Kiyoshi Ueda, James Unwin, Claire Vallance, Anbu Venkatachalam, Shin-ichi Wada, Tiffany Walmsley, Emily M. Warne, Joanne L. Woodhouse, Michael Burt, Michael N. R. Ashfold, Russell S. Minns, Ruaridh Forbes

Physical Chemistry Chemical Physics Vol. 26 ( 16 ) page： 12725 - 12737 2024.4

Language：English Publishing type：Research paper (scientific journal) Publisher：Royal Society of Chemistry (RSC)

The dissociation dynamics of UV pumped iodothiophene molecules are investigated using velocity map ion imaging, in combination with site-selective extreme ultraviolet ionization of the iodine atom.

DOI： 10.1039/d3cp06079a

Orbital effects on tunnel-electron momentum distributions: Ar and H2 studied by electron–ion coincidence momentum imaging Reviewed Open Access

Daimu Ikeya, Hikaru Fujise, Shinnosuke Inaba, Minami Takahashi, Masateru Yamamoto, Takeru Nakamura, Yu Nagao, Akitaka Matsuda, Mizuho Fushitani, Akiyoshi Hishikawa

Journal of Electron Spectroscopy and Related Phenomena Vol. 262 page： 147280 - 147280 2023.1

Electronic relaxation and dissociation dynamics in formaldehyde: pump wavelength dependence Reviewed Open Access

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

Physical Chemistry Chemical Physics Vol. 24 ( 3 ) page： 1779 - 1786 2022

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Royal Society of Chemistry (RSC)

The effect of the incident UV pump wavelength on the subsequent excited state dynamics, electronic relaxation, and ultimate dissociation of formaldehyde is studied using first principles simulation and Coulomb explosion imaging (CEI) experiments.

DOI： 10.1039/d1cp04264e

Scopus

Time-resolved photoelectron imaging of complex resonances in molecular nitrogen Reviewed Open Access

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

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

Scopus

PubMed

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

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

Capturing roaming fragments in real time: A molecular road movie

Endo T.

Optics InfoBase Conference Papers 2020.11

Ultrafast Reaction Imaging and Control by Ultrashort Intense Laser Pulses Reviewed Open Access

Akiyoshi Hishikawa, Akitaka Matsuda, Mizuho Fushitani

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

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

Molecules irradiated with intense laser pulses (field intensity similar to 10(15) W/cm(2)) exhibit a variety of characteristic processes, such as tunneling ionization, electron rescattering, high-order harmonics generation and Coulomb explosion, that cannot be seen in a weak light field. These features have attracted attention in the last decades as they provide unique approaches to visualize and manipulate ultrafast dynamics of atoms and molecules. Here we discuss molecular processes in intense laser fields, with focuses on the applications to ultrafast imaging and control of reaction dynamics.

DOI： 10.1246/bcsj.20200158

Web of Science

Scopus

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

Language：English 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−1 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

Web of Science

Scopus

PubMed

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

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

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

Open Access

Web of Science

Scopus

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

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

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