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Dose-rate effects on the bulk etch-rate of CR-39 track detector exposed to low-let radiations |
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| Authors: | T Yamauchi T Taniguchi K Oda T Ikeda Y Honda S Tagawa |
| Institution: | a Department of Nuclear Engineering, Kobe University of Mercantile Marine, 5-1-1 Fukaeminami-machi, Higashinada-ku, Kobe 658, Japan b The Institute for Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567, Japan |
| Abstract: | The effect of gamma-rays and pulsed electrons has been investigated on the bulk etch rate of CR-39 detector at doses up to 100 kGy under various dose-rate between 0.0044 and 35.0 Gy/s. The bulk etch rate increased exponentially with the dose at every examined dose-rates. It was reveled to be strongly depend on the dose-rate: the bulk etch rate was decreased with increasing dose-rate at the same total dose. A primitive model was proposed to explain the dose-rate effect in which oxygen dissolved was assumed to dominate the damage formation process. |
| Keywords: | CR-39 track detector gamma-ray pulsed electron absorbed dose dose rate bulk etch rate irradiation damage oxygen |
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