Energy Spectra of Prompt Gamma Rays from Al and Fe Thick Targets Irradiated by Helium and Proton Beams: Concerning Planetary Gamma-Ray Spectroscopy
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- Yamashita Naoyuki
- Advanced Research Institute for Science and Engineering, Waseda University
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- Hasebe Nobuyuki
- Advanced Research Institute for Science and Engineering, Waseda University
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- Miyachi Takashi
- Advanced Research Institute for Science and Engineering, Waseda University
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- Miyajima Mitsuhiro
- Advanced Research Institute for Science and Engineering, Waseda University
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- Sakurai Kunitomo
- Advanced Research Institute for Science and Engineering, Waseda University
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- Kobayashi Masanori
- Advanced Research Institute for Science and Engineering, Waseda University
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- Okudaira Osamu
- Advanced Research Institute for Science and Engineering, Waseda University
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- Yamamoto Hiroyuki
- Advanced Research Institute for Science and Engineering, Waseda University
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- Shibamura Eido
- Saitama Prefectural University
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- Uchihori Yukio
- National Institute of Radiological Sciences
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- Kase Masayuki
- Institute of Physical and Chemical Research
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Abstract
Bombardment experiments with thick targets made of each of Al and Fe were performed using 230 MeV/nucleon helium and 210 MeV 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.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 75 (5), 054201-, 2006
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679167140736
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- NII Article ID
- 110004702324
- 210000106146
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- NII Book ID
- AA00704814
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- BIBCODE
- 2006JPSJ...75e4201Y
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 7908237
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed