Updated on 2025/04/15

写真a

 
TAKASHIMA, Yoshifumi
 
Organization
Synchrotron Radiation Research Center Professor
Graduate School
Graduate School of Engineering
Undergraduate School
Synchrotron Radiation Research Center
Title
Professor

Degree 1

  1. 博士（理学） （ 1998.3   広島大学 ） 

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Research Interests 1

  1. Technology & Application of Synchrotron Radiation

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Research Areas 1

  1. Others / Others  / Physics of Particle Accelerators

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Research History 2

  1. Nagoya University   Synchrotron Radiation Research Center

    2012.10

  2. Nagoya University   Synchrotron Radiation Research Center

    2009.2

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Professional Memberships 4

  1. 日本加速器学会

  2. 日本放射光学会

  3. 日本物理学会

  4. 公益社団法人日本金属学会

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Awards 1

  1. Superconductivity Science and Technology Award

    2016.4   Forum of Superconductivity Science and Technology  

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    Country：Japan

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Papers 29

  1. Improved robustness of sequentially deposited potassium cesium antimonide photocathodes achieved by increasing the potassium content towards theoretical stoichiometry Open Access

    Guo, L; Shiohara, K; Yamaguchi, H; Wang, GX; Okabe, Y; Nakatake, M; Takakura, S; Yamamoto, M; Ogawa, S; Takashima, Y

    SCIENTIFIC REPORTS   Vol. 15 ( 1 )   2025.1

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  2. Young's double-slit experiment with undulator vortex radiation in the photon-counting regime

    Wada, SI; Ohta, H; Mano, A; Takashima, Y; Fujimoto, M; Katoh, M

    SCIENTIFIC REPORTS   Vol. 13 ( 1 )   2023.12

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  3. Spectral phase interferometry for direct electric-field reconstruction of synchrotron radiation

    Fuji, T; Kaneyasu, T; Fujimoto, M; Okano, Y; Salehi, E; Hosaka, M; Takashima, Y; Mano, A; Hikosaka, Y; Wada, S; Katoh, M

    OPTICA   Vol. 10 ( 2 ) page： 302 - 307   2023.2

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  4. Rugged bialkali photocathodes encapsulated with graphene and thin metal film

    Guo, L; Liu, FZ; Koyama, K; Regis, N; Alexander, AM; Wang, GX; DeFazio, J; Valdez, JA; Poudel, A; Yamamoto, M; Moody, NA; Takashima, Y; Yamaguchi, H

    SCIENTIFIC REPORTS   Vol. 13 ( 1 )   2023.2

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  5. Double-pulsed wave packets in spontaneous radiation from a tandem undulator

    Kaneyasu, T; Hosaka, M; Mano, A; Takashima, Y; Fujimoto, M; Salehi, E; Iwayama, H; Hikosaka, Y; Katoh, M

    SCIENTIFIC REPORTS   Vol. 12 ( 1 )   2022.6

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KAKENHI (Grants-in-Aid for Scientific Research) 3

  1. Study on the high-intensity-beam physics for the next-generation synchrotron light sources

    Grant number：24K15602  2024.4 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship：Coinvestigator(s) 

  2. Development of phase structure control of synchrotron radiation

    Grant number：20H00164  2020.4 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Katoh Masahiro

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    Authorship：Coinvestigator(s) 

    Precisely phase-controlled laser pulse is considered essential for quantum control of matters, which is the basis of quantum information technology. In this study, we focus on the fact that the phase structure of electromagnetic waves emitted by high-energy free electrons reflects the motion of electrons. We have demonstrated that the time structure of radiated wave packets from undulators can be controlled with high accuracy in the range from femtoseconds to attoseconds. We have also succeeded in applying such undulator radiation to the observation of femtosecond-order ultrafast relaxation phenomena.

  3. Practical implementation of a very-short-period undulator in a compact storage ring as a light source and the light source design optimized for it

    Grant number：19H04401  2019.4 - 2022.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Yamamoto Shigeru

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    Authorship：Coinvestigator(s) 

    We have explored possibility of practical implementation of a very-short-period undulator in a compact electron storage ring. After intensive investigation for the storage ring of Aichi Synchrotron Radiation Center (Aichi SR), we confirmed that a feasibility study of such a undulator at the Aichi SR can be fulfilled. Conversion of the undulator to be installed in Aichi SR was performed successfully.
    However, under the influence of COVID19, we finally concluded that the installation of the undulator and the feasibility study at the Aichi SR were not able to perform in time until the end of research period. We have converted our research plan and installed the undulator in the Accelerator Test Facility of KEK as a second best candidate for the present research at the final phase of FY2023 and prepared the feasibility study.

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Teaching Experience (On-campus) 17

  1. 数学I及び演習

    2016

  2. 数学2及び演習

    2016

  3. 力学I

    2016

  4. 力学I

    2015

  5. 数学I及び演習

    2015

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