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MEASUREMENTS OF 60Co IN MASSIVE STEEL SAMPLES EXPOSED TO THE HIROSHIMA ATOMIC BOMB EXPLOSION.
MedLine Citation:
PMID:  22378201     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ABSTRACT: To study discrepancies in retrospective Hiroshima dosimetry, the specific activity of Co in 16 steel samples from Hiroshima was measured using gamma-ray spectrometry in underground laboratories. There is general agreement between these new activity measurements and the specific activities derived from previously calculated dose values on the one hand and former measurements of samples gathered at distances less than 1,000 m from the center of the explosion (< 1,000 m slant range) on the other. It was found that activities at long range (> 1,300 m slant range) were mainly cosmogenically induced. Furthermore, at long range, these results are in disagreement with older measurements whose specific activity values were 10 to 100 times higher than predicted by computer model calculations in DS86 and DS02. As a consequence, the previously reported discrepancy is not confirmed.
Authors:
Joël Gasparro; Mikael Hult; Gerd Marissens; Masaharu Hoshi; Kenichi Tanaka; Satoru Endo; Matthias Laubenstein; Harald Dombrowski; Dirk Arnold
Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Health physics     Volume:  102     ISSN:  1538-5159     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-3-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985093R     Medline TA:  Health Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  400-409     Citation Subset:  -    
Affiliation:
*European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, EC-JRC-IRMM, Retieseweg 111, 2440 Geel, Belgium; †Research Institute for Nuclear Medicine and Biology, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima 734, Japan; ‡Division of Physics, Department of Liberal Arts and Sciences, Center of Medical Education, Sapporo Medical University, South 1, West 17, Chuo-ku, Sapporo Hokkaido 060-8556 Japan; §Quantum Energy Applications, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan; **Laboratori Nazionali del Gran Sasso, INFN, S.S. 17/bis km 18 + 910, I-67010 Assergi (AQ), Italy; ††Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, Braunschweig 38116, Germany.
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