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Track detector of CR-39-DAP-copolymer with variable threshold to detect trans-iron nuclei in galactic cosmic rays
https://repo.qst.go.jp/records/45384
https://repo.qst.go.jp/records/45384a7ed9279-d4a3-46da-bf91-52b4b1e40f2d
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-01-05 | |||||
| タイトル | ||||||
| タイトル | Track detector of CR-39-DAP-copolymer with variable threshold to detect trans-iron nuclei in galactic cosmic rays | |||||
| 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× Doke, Tadayoshi× Hasebe, Nobuyuki× Ogura, Kouichi× Yasuda, Nakahiro× Tsuruta, Takao× et.al× 小平 聡× 道家 忠義× 安田 仲宏× 鶴田 隆雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Observation of trans-iron nuclei in galactic cosmic rays (Z>30) requires a high performance cosmic ray detector telescope with a large exposure area because of their extremely low fluxes. A solid-state track detector such as CR-39 has the advantage of easy extension of exposure area, but it is necessary to raise the Z/beta detection threshold in order to suppress background tracks produced by galactic cosmic rays with Z/beta<30. The track registration sensitivity and detection threshold for heavy ions with various Z*/beta were verified by using track detectors of copolymers of CR-39 and DAP (diallyl phthalate) with various DAP concentration. We found that it is possible to control the Z*/beta detection threshold of copolymers by changing DAP concentration. In order to detect heavy ions with Z*/beta > 30, the optimum DAP concentration was found to be approximately 50%. |
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| 書誌情報 |
Radiation Measurements 巻 43, 号 Suppl.1, p. S52-S55, 発行日 2008-08 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1350-4487 | |||||
