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Evidence for a critical dose above which damage to carbonate ester bonds in PADC appear after gamma ray and ultra soft X-ray exposures
https://repo.qst.go.jp/records/78484
https://repo.qst.go.jp/records/7848457296dd9-364a-43fa-91d9-a3ae6ee6fd45
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-01-22 | |||||
| タイトル | ||||||
| タイトル | Evidence for a critical dose above which damage to carbonate ester bonds in PADC appear after gamma ray and ultra soft X-ray exposures | |||||
| 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 |
Kusumoto, Tamon
× Kusumoto, Tamon× Okada, Shogo× Kurashige, Hisaya× Kobayashi, Kazuo× Fromm, Michel× Quentin, Raffy× Ludwig, Nicolas× Kanasaki, Masato× Oda, Keiji× Honda, Yoshihide× Tojo, Sachiko× Jean-Emmanuel, Groetz× Ogawara, Ryo× Kodaira, Satoshi× Rémi, Barillon× Yamauchi, Tomoya× Tamon, Kusumoto× Ryo, Ogawara× Satoshi, Kodaira |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | It has been confirmed that the density of carbonate ester in poly(allyl diglycol carbonate) (PADC), which is a well-known polymeric nuclear track detector CR-39, begins decreasing above a critical dose of about 60 kGy duringexposurestoCo-60gammaraysandUltraSoftX-rays(USX:Kα(Al)withenergy1.49keV).Afterexposure to Co-60 gamma rays at 77 K and room temperature (RT), a significant difference in Electron Spin Resonance (ESR) spectra has been observed at both sides of a critical dose of 60 kGy, where is a threshold for the degradation of carbonate ester in PADC. Namely, the types of free radicals in PADC are different from each other below and above this critical dose. Changes in FT-IR spectra of carbonate ester in PADC above critical doses for gamma ray and USX exposures have also been observed, while that of ether decreases linearly with increasing absorbed dose. These results are well concordant with previous results obtained with 28 MeV electron beams. They also indicate that at least two hits of electrons are needed to destroy the carbonate ester in PADC. The layered structure of ion tracks in PADC can be explained thanks to these experimental results. Also, some clues for the identification of created radicals have been obtained from the results using both ESR and IR. | |||||
| 書誌情報 |
Radiation Physics and Chemistry 巻 170, p. 108628, 発行日 2020-05 |
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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 | 0969-806X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.radphyschem.2019.108628 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.radphyschem.2019.108628 | |||||
