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On the use of CR-39 PNTD with AFM analysis in measuring proton-induced target fragmentation particles
https://repo.qst.go.jp/records/47085
https://repo.qst.go.jp/records/470854011b92f-9755-498b-80a2-06b59dabd603
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-04-07 | |||||
| タイトル | ||||||
| タイトル | On the use of CR-39 PNTD with AFM analysis in measuring proton-induced target fragmentation particles | |||||
| 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× Konishi, Teruaki× Kitamura, Hisashi× Kurano, Mieko× Kawashima, Hajime× Uchihori, Yukio× Nishio, Teiji× Yasuda, Nakahiro× Ogura, Koichi× Sihver, Lembit× Benton, Eric× 小平 聡× 小西 輝昭× 北村 尚× 蔵野 美恵子× 川嶋 元× 内堀 幸夫× 西尾 禎治× 安田 仲宏× 小倉 浩一× Ｓｉｈｖｅｒ Ｌｅｍｂｉｔ× Ｂｅｎｔｏｎ Ｅｒｉｃ |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In addition to energy loss by ionization process, protons of energy >∼50 MeV, such as those used in proton radiotherapy, can undergo nuclear interactions with nuclei of Z > 1, resulting in the production of short range (<20 μm), high-LET (linear energy transfer) target fragment particles. One of the few methods to detect these short-range particles is by means of CR-39 plastic nuclear track detector (PNTD) analyzed with an atomic force microscope (AFM). However, due to the LET-dependent angular sensitivity of CR-39 PNTD, multiple detectors exposed at a range of incident angles to the primary proton beam, must be analyzed in order to accurately determine the LET spectrum, absorbed dose and dose equivalent. The LET spectrum of 160 MeV proton-induced secondary particles was experimentally measured with CR-39 PNTDs, which were exposed at six different incident angles to take into account the intrinsic sensitivity of the critical angle for track registration. The irradiated detectors were chemically processed to remove a 1 μm thick volume of CR-39 PNTD. The measured LET range of short range tracks was from 15 keV/μm up to 1.5 MeV/μm. The absorbed dose contribution (Ds/Dp) from secondary particles to primary proton dose was ∼1%, while the dose equivalent contribution (Hs/Dp) was found to be ∼20%. Analysis of CR-39 PNTD by AFM yielded ∼60% higher value for absorbed dose compared to standard optical microscopy analysis. | |||||
| 書誌情報 |
Nuclear Instruments and Methods in Physics Research B 巻 349, p. 163-168, 発行日 2015-04 |
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| 出版者 | ||||||
| 出版者 | ELSEVIER | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-583X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.nimb.2015.02.052 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.sciencedirect.com/science/article/pii/S0168583X15001779 | |||||
| 関連名称 | http://www.sciencedirect.com/science/article/pii/S0168583X15001779 | |||||
