The Institute of Scientific and Industrial Research, Osaka University


LAST UPDATE 2021/06/16

  • 研究者氏名
    Researcher Name

    神戸正雄 Masao GOHDO
    助教 Assistant Professor
  • 所属
    Professional Affiliation

    The Institute of Scientific and Industrial Research, Osaka University

    Department of Advanced Nanofabrication
  • 研究キーワード
    Research Keywords

    Ionizing radiation induced chemical reaction mechanism
    Pulse radiolysis
    Ultra-fast electron beam
Research Subject
Investigation of ionizing radiation induced chemical reaction mechanisms

研究の背景 Background


Ionizing radiation induces ionization and excitation of irradiated materials. Ionization is characteristic primary reaction. Understanding of reaction mechanisms including identification of reaction intermediate and the final products is important fundamental knowledge. These fundamentals are quite important to expand application of ionizing radiation like atomic energy industries or material reforming, and expand the surviving field of human-beings towards cosmic space.

研究の目標 Outcome


Study aim is to understand early stage reaction dynamics of ionizing radiation induced chemical reaction mainly in fluid solution and to achieve understanding of whole reaction dynamics from the primary reaction to the final product. To promote the study, development of a new measurement method and enhancement of time-resolution of pulse radiolysis are also studied.

研究図Research Figure

Fig.1. Transient absorption spectra of CCl4 and scavenging of the transient absorption at 340 nm by CHCl3 using ns-pulse radiolysis technique.

Fig.2. An example of fs-pulse radiolysis on neat CCl4. The formation dynamics of the ion pair of CCl3+ associated with Cl- was clearly observed.

Fig.3. Simulation of special distribution of ionized electron in water by an original simulation code with Monte Carlo method.

文献 / Publications

T. Toigawa, M. Gohdo, K. Norizawa, T. Kondoh, K. Kan, J. Yang and Y. Yoshida, Radiat. Phys. Chem., 2016, 123, 73–78.T. Kondoh, J. Yang, K. Kan, M. Gohdo, H. Shibata and Y. Yoshida, Electron. Commun. Jpn., 2016, 11787.