Energy spectra of prompt gamma rays from Al and Fe thick targets irradiated by helium and proton beams

Concerning planetary gamma-ray spectroscopy

Naoyuki Yamashita, Nobuyuki Hasebe, Takashi Miyachi, Mitsuhiro Miyajima, Kunitomo Sakurai, Masanori Kobayashi, Osamu Okudaira, Hiroyuki Yamamoto, Eido Shibamura, Yukio Uchihori, Masayuki Kase

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Bombardment experiments with thick targets made of each of Al and Fe were performed using 230 MeV/nucleon helium and 210MeV proton beams. The energies and intensities of prompt gamma rays emitted by inelastic nuclear scattering of energetic neutrons were measured by a high-purity Ge detector. This work presents the first experimental results concerning the emission of prompt gamma rays from thick targets anticipated by helium component in galactic cosmic rays, since no foregoing work related to this one has been done. It is concluded that helium has the capability of prompt gamma ray line emission through the inelastic nuclear reaction of neutrons with target material by a factor of 3.5 on average in comparison with proton. As regards the lunar and planetary nuclear spectroscopy, a consideration is given on the role of helium particles to the total production of gamma rays emitted from a planetary surface.

    Original languageEnglish
    Article number054201
    JournalJournal of the Physical Society of Japan
    Volume75
    Issue number5
    DOIs
    Publication statusPublished - 2006 May

    Fingerprint

    proton beams
    energy spectra
    helium
    gamma rays
    spectroscopy
    planetary surfaces
    neutrons
    nuclear scattering
    nuclear reactions
    bombardment
    purity
    inelastic scattering
    protons
    detectors
    energy

    Keywords

    • Alpha particle
    • Gamma ray
    • Helium
    • Lunar and planetary nuclear spectroscopy
    • Proton
    • Thick target bombardment

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Energy spectra of prompt gamma rays from Al and Fe thick targets irradiated by helium and proton beams : Concerning planetary gamma-ray spectroscopy. / Yamashita, Naoyuki; Hasebe, Nobuyuki; Miyachi, Takashi; Miyajima, Mitsuhiro; Sakurai, Kunitomo; Kobayashi, Masanori; Okudaira, Osamu; Yamamoto, Hiroyuki; Shibamura, Eido; Uchihori, Yukio; Kase, Masayuki.

    In: Journal of the Physical Society of Japan, Vol. 75, No. 5, 054201, 05.2006.

    Research output: Contribution to journalArticle

    Yamashita, N, Hasebe, N, Miyachi, T, Miyajima, M, Sakurai, K, Kobayashi, M, Okudaira, O, Yamamoto, H, Shibamura, E, Uchihori, Y & Kase, M 2006, 'Energy spectra of prompt gamma rays from Al and Fe thick targets irradiated by helium and proton beams: Concerning planetary gamma-ray spectroscopy', Journal of the Physical Society of Japan, vol. 75, no. 5, 054201. https://doi.org/10.1143/JPSJ.75.054201
    Yamashita, Naoyuki ; Hasebe, Nobuyuki ; Miyachi, Takashi ; Miyajima, Mitsuhiro ; Sakurai, Kunitomo ; Kobayashi, Masanori ; Okudaira, Osamu ; Yamamoto, Hiroyuki ; Shibamura, Eido ; Uchihori, Yukio ; Kase, Masayuki. / Energy spectra of prompt gamma rays from Al and Fe thick targets irradiated by helium and proton beams : Concerning planetary gamma-ray spectroscopy. In: Journal of the Physical Society of Japan. 2006 ; Vol. 75, No. 5.
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    AU - Miyachi, Takashi

    AU - Miyajima, Mitsuhiro

    AU - Sakurai, Kunitomo

    AU - Kobayashi, Masanori

    AU - Okudaira, Osamu

    AU - Yamamoto, Hiroyuki

    AU - Shibamura, Eido

    AU - Uchihori, Yukio

    AU - Kase, Masayuki

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    AB - Bombardment experiments with thick targets made of each of Al and Fe were performed using 230 MeV/nucleon helium and 210MeV proton beams. The energies and intensities of prompt gamma rays emitted by inelastic nuclear scattering of energetic neutrons were measured by a high-purity Ge detector. This work presents the first experimental results concerning the emission of prompt gamma rays from thick targets anticipated by helium component in galactic cosmic rays, since no foregoing work related to this one has been done. It is concluded that helium has the capability of prompt gamma ray line emission through the inelastic nuclear reaction of neutrons with target material by a factor of 3.5 on average in comparison with proton. As regards the lunar and planetary nuclear spectroscopy, a consideration is given on the role of helium particles to the total production of gamma rays emitted from a planetary surface.

    KW - Alpha particle

    KW - Gamma ray

    KW - Helium

    KW - Lunar and planetary nuclear spectroscopy

    KW - Proton

    KW - Thick target bombardment

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