Document Detail


An intercomparison for nirs and nyu passive thoron gas detectors at nyu.
MedLine Citation:
PMID:  22378203     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
ABSTRACT: An intercomparison on thoron (Rn) measurement was carried out between National Institute of Radiological Sciences, Japan (NIRS), and New York University School of Medicine, USA (NYU). The measurements of Rn concentration at NIRS and NYU were performed by using the scintillation cell method and the two-filter method, respectively, as the standard measurement method. Three types of alpha track detectors based on passive radon (Rn)-Rn discriminative measurement technique were used: Raduet and Radopot detectors were used at NIRS, and four-leaf detectors were used at NYU. In this study, the authors evaluated Rn concentration variation in terms of run for exposure, measurement method, and exposure chamber. The detectors were exposed to Rn gas with approximately 15 kBq m during the period from 0.75 to 3 d. As a result, the variation of each measurement method among these exposure runs was comparable to or less than that for the two-filter method. Agreement between the standard measurement methods of NIRS and NYU was observed to be about 10%, as is the case with the passive detectors. The Raduet detector showed a large variation in the detection response between the NIRS and NYU chambers, which could be related to different traceability.
Authors:
Atsuyuki Sorimachi; Tetsuo Ishikawa; Shinji Tokonami; Passaporn Chittaporn; Naomi H Harley
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Health physics     Volume:  102     ISSN:  1538-5159     ISO Abbreviation:  Health Phys     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-03-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985093R     Medline TA:  Health Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  419-24     Citation Subset:  IM    
Affiliation:
*Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori 036-8564, Japan; †National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba, 263-8555, Japan; ‡New York University School of Medicine, 550 First Avenue, New York, NY 10016.
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