文章基本信息

标题：90Sr Concentration in Cow Teeth from South Ural Region, Russia, Using Monte Carlo Simulation
其他标题：90Sr Concentration in Cow Teeth from South Ural Region, Russia, Using Monte Carlo Simulation
本地全文：下载
作者：Eldana TIELIEWUHAN ; Kenichi TANAKA ; Shin TOYODA 等
期刊名称：Journal of Radiation Research
印刷版ISSN：0449-3060
电子版ISSN：1349-9157
出版年度：2006
卷号：47
期号：SupplementA
页码：117-120
DOI：10.1269/jrr.47.A117
摘要：The Imaging Plate (IP) technique which uses the Monte Carlo code, MCNP, to convert IP response to 90 Sr concentration with varied thickness of the standard source has been proposed in this study. In order to verify the validity of simulation calculation in the proposed method, the radial distribution of IP signal has been compared between calculation and experiment. The result is, they are in good agreement. The proposed method has been applied to a cow tooth from the territory contaminated by radioactivity after the accident in the Mayak facility in the South Ural, Russia. Two samples have been prepared from the tooth, i.e. , a thin sample of 1.2 ± 0.2 mm in thickness and a thick sample which is a half of the tooth. The IP response has been evaluated for the thick sample using experimentally made standard sources, and multiplied by a modification factor to decide that for the thin sample. The modification factor has been determined with MCNP to be 0.83 ± 0.08 for a thickness of 1.2 ± 0.2 mm. Using these values, 90 Sr concentration has been estimated to be 0.11 Bq/g for the thin sample and 0.12 Bq/g for the thick sample, hence they are in good agreement.
关键词：Imaging plate; 90 Sr concentration; Cow teeth; Standard Sources; MCNP Monte Carlo code