Residual neutron-induced radionuclides in a soil sample collected in the vicinity of the criticality accident site in Tokai-mura, Japan: A Progress Report

Authors
Nakanishi, T Hosotani, R Komura, K Muroyama, T Kofuji, H Murata, Y Kimura, S Sahoo, SK Yonehara, H Watanabe, Y Ban-nai, TA
Citation
T. Nakanishi et al., Residual neutron-induced radionuclides in a soil sample collected in the vicinity of the criticality accident site in Tokai-mura, Japan: A Progress Report, J ENV RAD, 50(1-2), 2000, pp. 61-68
Citations number
6
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
ISSN journal
0265931X → ACNP
Volume
50
Issue
1-2
Year of publication
2000
Pages
61 - 68
Database
ISI
SICI code
0265-931X(2000)50:1-2<61:RNRIAS>2.0.ZU;2-I
Abstract
Residual neutron-induced radionuclides were measured in a soil sample colle cted in the vicinity of the location where a criticality accident occurred (in Tokai-mura, from 30 September to 1 October, 1999). Concentrations of Na -24, La-140, Sb-122, Fe-59, Sb-124, Sc-46, Zn-65,Cs-134 and Co-60 in the so il sample were determined by gamma-ray spectrometry, and neutron activation analysis was carried out for selected target elements in the sample. Tenta tive estimates of the apparent thermal and epithermal neutron fluences whic h reached the sample were obtained through combined analyses of Fe-59/Fe-58 , Sb-124/Sb-123, Sc-46/Sc-45, Zn-65/Zn-64, Cs-134/Cs-133 and Co-60/Co-59. ( C) 2000 Elsevier Science Ltd. All rights reserved.