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重粒子線照射によるスクロースのラジカルのESR とESR イメージング検討
https://repo.qst.go.jp/records/55768
https://repo.qst.go.jp/records/55768c7567874-3aa1-48f1-af14-1c3e5ef22916
| Item type | 一般雑誌記事 / Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-01-17 | |||||
| タイトル | ||||||
| タイトル | 重粒子線照射によるスクロースのラジカルのESR とESR イメージング検討 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 | 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 |
中川, 公一
× 中川, 公一× 松本, 謙一郎× 中川 公一× 松本 謙一郎 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We investigated stable radical-production cross sections (sigma) of sucrose and L-alanine radicals produced by heavy-ion irradiations with various LET. The heavy-ion results were compared with X-ray irradiation at the same dose. The ESR signal areas for the two compounds showed a linear relation with the absorbed dose, as well as a logarithmic correlation with the LET. Further analysis was carried out for the radical-production cross section, which showed that stable radicals of the two compounds were produced through collisions of several particles with a single molecule. The relative sigma–value of sucrose for C-ions was 1.29 x 10-12 +/- 0.64 x 10-12 [microm2]. The value of alanine for C-ions was 6.83 x 10-13 +/- 0.42 x 10-13 [microm2]. Considering the structural molecular sizes of sucrose and alanine, the sigma values are similar. In addition, a comparison of the EPR results for the C-ions and X-rays at 50 Gy dose was made. Sucrose spin concentrations produced by C-ions at LET 13.1 and X-rays were similar. Thus, the noble EPR results with X-ray and heavy-ion irradiations imply that sucrose can be useful as a radiation indicator. | |||||
| 書誌情報 |
放射線医学総合研究所重粒子線がん治療装置等共同利用研究報告書 巻 NIRS-M-244, 号 HIMAC-136, p. 175-176, 発行日 2011-11 |
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| 出版者 | ||||||
| 出版者 | 放医研 | |||||
