RAPID CORRELATION ASSESSMENT OF SR IN FALLOUT BY GAMMA-SPECTROSCOPY

被引：1
作者：
VAPIREV, EI
HRISTOVA, AV
机构：
[1] Faculty of Physics, Sofia University, Sofia
来源：
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1993年 / 20卷 / 01期
关键词：
D O I：
10.1016/0265-931X(93)90016-Z
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Air filters and fallout samples from the Chernobyl accident have been investigated by beta-analysis for the determination of the Cs-137/Sr-90 ratio and the absolute Sr-90 activity. Gamma-spectroscopic data from May 1986 have been used for the calculation of the Ba-140/Cs-137 ratio and the absolute Ba-140 activity. The observed ratio in the samples is approximately the same as in the core of the damaged reactor It is concluded that gamma-spectroscopic measurements of Ba-140 and the reactor core ratio of Ba-140/Sr-90 can be used for the estimation of the strontium activity in the fallout immediately after an accident. The Cs-137/Sr-90 ratio can be used for the estimation of the strontium fallout in the late post-accident period.
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页码：23 / 34
页数：12
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