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Control of the detection threshold of CR-39 PNTD for measuring ultra heavy nuclei in galactic cosmic rays
https://repo.qst.go.jp/records/45738
https://repo.qst.go.jp/records/45738fe774966-ddcd-4e2b-9f07-ecd4fb649263
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2010-02-02 | |||||
| タイトル | ||||||
| タイトル | Control of the detection threshold of CR-39 PNTD for measuring ultra heavy 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× Yasuda, Nakahiro× Kawashima, Hajime× Kurano, Mieko× Hasebe, Nobuyuki× Doke, Tadayoshi× Ota, Syuya× Ogura, Kouichi× 小平 聡× 安田 仲宏× 川嶋 元× 蔵野 美恵子× 太田 周也 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | It is necessary to develop a track detector with higher detection threshold and high charge resolution for ultra heavy cosmic ray observation. The track registration sensitivity in CR-39 track detector etched by PEW (Potassium–Ethanol–Water) solution was verified using heavy ion beams at the HIMAC accelerator. It was found that PEW solution makes effectively to desensitize the track registration sensitivity in CR-39 detector. Its detection threshold of Z*/b is successfully raised to be Z*/b ¼ 39 by using PEW solution with the concentration of ethanol of 45 wt%. However this produces a "fuzzy track". A two-step process of etching involving a post-etch with 7 mol/l sodium hydroxide solution produced very clear track edges and remarkably improves the charge resolution for heavy ions. |
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| 書誌情報 |
Radiation Measurements 巻 44, 号 9-10, p. 861-864, 発行日 2009-10 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1350-4487 | |||||
