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Investigation of shielding material properties for effective space radiation protection
https://repo.qst.go.jp/records/80012
https://repo.qst.go.jp/records/80012e04a4b9b-ce32-46e2-9e34-7603d2b4b818
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-06-08 | |||||
| タイトル | ||||||
| タイトル | Investigation of shielding material properties for effective space radiation protection | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Naito, Masayuki
× Naito, Masayuki× Kodaira, Satoshi× Ogawara, Ryo× Tobita, Kenji× Someya, Yoji× Kusumoto, Tamon× Kusano, Hiroki× Kitamura, Hisashi× Koike, Masamune× Uchihori, Yukio× Yamanaka, Masahiro× Mikoshiba, Ryo× Endo, Toshiaki× Kiyono, Naoki× Hagiwara, Yusuke× Kodama, Hiroaki× Matsuo, Shinobu× Takami, Yasuhiro× Sato, Toyoto× Shin-ichi, Orimo× Masayuki, Naito× Satoshi, Kodaira× Ryo, Ogawara× Kenji, Tobita× Yoji, Someya× Tamon, Kusumoto× Hiroki, Kusano× Hisashi, Kitamura× Masamune, Koike× Yukio, Uchihori |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Geant4 Monte Carlo simulations were carried out to investigate the possible shielding materials of aluminum, polyethylene, hydrides, complex hydrides and composite materials for radiation protection in spacecraft by considering two physical parameters, stopping power and fragmentation cross section. The dose reduction with shielding materials was investigated for Fe ions with energies of 500 MeV/n, 1 GeV/n and 2 GeV/n which are around the peak of the GCR energy spectrum. Fe ions easily stop in materials such as polyethylene and hydrides as opposed to materials such as aluminum and complex hydrides including high Z metals with contain little or no hydrogen. Attenuation of the primary particles in the shielding and fragmentation into more lightly charged and therefore more penetrating secondary particles are competing factors: attenuation acts to reduce the dose behind shielding while fragmentation increases it. Among hydrogenous materials, 6Li10BH4 was one of the more effective shielding materials as a function of mass providing a 20% greater dose reduction compared to polyethylene. Composite materials such as carbon fiber reinforced plastic and SiC composite plastic offer 1.9 times the dose reduction compared to aluminum as well as high mechanical strength. Composite materials have been found to be promising for spacecraft shielding, where both mass and volume are constrained. | |||||
| 書誌情報 |
Life Sciences in Space Research 巻 26, p. 69-76, 発行日 2020-08 |
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| 出版者 | ||||||
| 出版者 | Elsevier Ltd. | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2214-5524 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.lssr.2020.05.001 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.lssr.2020.05.001 | |||||
