RAPID CORRELATION ASSESSMENT OF SR IN FALLOUT BY GAMMA-SPECTROSCOPY

Authors
VAPIREV EI HRISTOVA AV
Citation
Ei. Vapirev et Av. Hristova, RAPID CORRELATION ASSESSMENT OF SR IN FALLOUT BY GAMMA-SPECTROSCOPY, Journal of environmental radioactivity, 20(1), 1993, pp. 23-34
Citations number
NO
Categorie Soggetti
Environmental Sciences
Journal title
Journal of environmental radioactivity → ACNP
ISSN journal
0265931X
Volume
20
Issue
1
Year of publication
1993
Pages
23 - 34
Database
ISI
SICI code
0265-931X(1993)20:1<23:RCAOSI>2.0.ZU;2-7
Abstract
Air filters and fallout samples from the Chernobyl accident have been investigated by beta-analysis for the determination of the Cs-137/Sr-9 0 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 rati o 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 reac tor core ratio of Ba-140/Sr-90 can be used for the estimation of the s trontium activity in the fallout immediately after an accident. The Cs -137/Sr-90 ratio can be used for the estimation of the strontium fallo ut in the late post-accident period.