Measurements and calculations of gamma rays from proton-irradiated thick targets

Naoyuki Yamashita*, Nobuyuki Hasebe, T. Miyachi, E. Shibamura, H. Okada, O. Okudaira, H. Sori, T. Koike, T. Hiramoto, A. Nagashima, T. Fukuoka, M. Kase, V. Dmitrenko, K. Vlasik


    研究成果: Article査読

    4 被引用数 (Scopus)


    To help understand planetary gamma-ray spectra, the energies and intensities of gamma rays produced by energetic particles interacting in thick targets were simulated experimentally and numerically. Using the accelerator at RIKEN, thick targets of iron, granite, and gabbro were exposed to 180 or 210 MeV proton beam, and characteristic gamma rays emitted from the targets were measured by Ge detectors. The experimental results were compared with the values calculated by Geant4. The relative intensities of gamma-ray lines from the iron target in the experiment were consistent with those in the calculation within the error of ∼5%. As for stone targets, strong inconsistencies were observed. Further improvement in the calculation code and cross section files, as well as experimental resemblance to space missions are indispensable for gamma-ray spectroscopy.

    ジャーナルAdvances in Space Research
    出版ステータスPublished - 2003

    ASJC Scopus subject areas

    • 宇宙惑星科学
    • 天文学と天体物理学


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