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Analysis of radiation dose variations measured by passive dosimeters onboard the International Space Station during the solar quiet period (2007-2008)
https://repo.qst.go.jp/records/46537
https://repo.qst.go.jp/records/465376751a19e-9371-4086-bd56-e119c778a0e7
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-04-24 | |||||
| タイトル | ||||||
| タイトル | Analysis of radiation dose variations measured by passive dosimeters onboard the International Space Station during the solar quiet period (2007-2008) | |||||
| 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 |
Kodaira, Satoshi
× Kodaira, Satoshi× Kawashima, Hajime× Kitamura, Hisashi× Kurano, Mieko× Uchihori, Yukio× Yasuda, Nakahiro× Ogura, Kouichi× Kobayashi, Ikuo× Koguchi, Yasuhiro× Akatov, Yury× Shurshakov, Vyacheslav× Tolochek, Raisa× Benton, Eric× et.al× 小平 聡× 川嶋 元× 北村 尚× 蔵野 美恵子× 内堀 幸夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The average absorbed dose and dose equivalent rates from space radiation were observed using passive dosimeters with same material and configuration at the same location onboard the International Space Station (ISS) over four different occasions (I–IV) between 2007 and 2008. The passive dosimeters consisted of a combination of thermoluminescent detectors (TLDs) and plastic nuclear track detectors (PNTDs). Total average absorbed dose rate increased by 68 ± 9% over two years. The observed increase was due to the incremental increase in the altitude of the ISS over the course of the experiment and the corresponding increase in trapped proton flux encountered during passage of the ISS through the SAA (South Atlantic Anomaly), which was confirmed with the results monitored by DB-8 active dosimeter on the ISS. The PNTD data showed that the average absorbed dose and dose equivalent rates from particles of LET∞H2O ≥ 100 keV/μm were 28 ± 2% and 51 ± 3% of ≥10 keV/μm during Periods I–III, while the dose contributions of particles ≥100 keV/μm during Period IV were 36 ± 5% and 59 ± 10%, respectively. The integral dose equivalent distribution during Period IV shows significant enhancement from particles ≥100 keV/μm. These facts suggest that a significant fraction of the high LET component is due to short-range recoil nuclei produced in target fragmentation reactions between primary protons and the nuclei of the passive dosimeters and surrounding materials. | |||||
| 書誌情報 |
Radiation Measurements 巻 49, p. 95-102, 発行日 2013-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1350-4487 | |||||
