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ID 118397
著者
Kida, Fumio SUN•LUX Optical Co., Ltd.
山田, 健二 Tokushima University
Nakamura, Mami Tokushima University
Hase, Hitoshi SUN•LUX Optical Co., Ltd.
キーワード
Direct X-ray
Scattered X-ray
CR-39
Photoexcited emission
Dose response
Silica nanocapsule
資料タイプ
学術雑誌論文
抄録
The photoexcited emissions of direct- and scattered-X-ray-irradiated CR-39 and methylviologen-encapsulated silica nanocapsule (MV2+@SiO2 NC)-doped CR-39 were observed, and they showed a dose response. The benzophenone radical was formed in a shallow trap in CR-39 upon X-ray irradiation from 10 to 30 Gy, and the fluorescence intensity increased with the dose. Methylviologen in SiO2 NCs competitively captured electrons generated by X-ray irradiation, and the captured electrons were reverse transferred to the shallow traps with time. A minimum dose rate of 300 µGy/s was observed between 1 and 5 Gy. Finally, a dose response of less than 2 mGy for scattered X-rays was obtained in this system.
掲載誌名
Results in Optics
ISSN
26669501
出版者
Elsevier
12
開始ページ
100487
発行日
2023-07-10
権利情報
This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/).
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言語
eng
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出版社版
部局
放射線総合センター