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Title: Up-to-date radon-thoron discriminative detector for a large scale survey

Abstract

An up-to-date radon-thoron discriminative detector has been developed for conducting a large scale survey. Comparing with our previous detector, some functional problems have been solved. The lowest and highest detection limits of the detector were estimated to be around 5 and 1000 Bq m{sup -3} for radon, and 15 and 1000 Bq m{sup -3} for thoron, respectively, with a 6 month exposure and several theoretical assumptions. Small indoor survey were carried out in Japan and in Hungary using the present detector. The presence of thoron was demonstrated in any indoor surveys by the two results. Since any measurements without discrimination of radon isotopes will result in different risk estimates from actual situations, a special attention should be paid to thoron and its concentration should be accordingly measured as well as the radon concentration.

Authors:
; ; ; ;  [1];  [2]
  1. Radon Research Group, Research Cfenter for Radiation Safety, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 (Japan)
  2. (Hungary)
Publication Date:
OSTI Identifier:
20723247
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 76; Journal Issue: 11; Other Information: DOI: 10.1063/1.2132270; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; EQUIPMENT; HUNGARY; IONIZATION CHAMBERS; JAPAN; NATURAL RADIOACTIVITY; RADIATION HAZARDS; RADON; RADON 220; SENSITIVITY

Citation Formats

Tokonami, Shinji, Takahashi, Hiroyuki, Kobayashi, Yosuke, Zhuo, Weihai, Hulber, Erik, and Radosys Co., Ltd., Vegyesz u. 17-25, H-1116 Budapest. Up-to-date radon-thoron discriminative detector for a large scale survey. United States: N. p., 2005. Web. doi:10.1063/1.2132270.
Tokonami, Shinji, Takahashi, Hiroyuki, Kobayashi, Yosuke, Zhuo, Weihai, Hulber, Erik, & Radosys Co., Ltd., Vegyesz u. 17-25, H-1116 Budapest. Up-to-date radon-thoron discriminative detector for a large scale survey. United States. doi:10.1063/1.2132270.
Tokonami, Shinji, Takahashi, Hiroyuki, Kobayashi, Yosuke, Zhuo, Weihai, Hulber, Erik, and Radosys Co., Ltd., Vegyesz u. 17-25, H-1116 Budapest. Tue . "Up-to-date radon-thoron discriminative detector for a large scale survey". United States. doi:10.1063/1.2132270.
@article{osti_20723247,
title = {Up-to-date radon-thoron discriminative detector for a large scale survey},
author = {Tokonami, Shinji and Takahashi, Hiroyuki and Kobayashi, Yosuke and Zhuo, Weihai and Hulber, Erik and Radosys Co., Ltd., Vegyesz u. 17-25, H-1116 Budapest},
abstractNote = {An up-to-date radon-thoron discriminative detector has been developed for conducting a large scale survey. Comparing with our previous detector, some functional problems have been solved. The lowest and highest detection limits of the detector were estimated to be around 5 and 1000 Bq m{sup -3} for radon, and 15 and 1000 Bq m{sup -3} for thoron, respectively, with a 6 month exposure and several theoretical assumptions. Small indoor survey were carried out in Japan and in Hungary using the present detector. The presence of thoron was demonstrated in any indoor surveys by the two results. Since any measurements without discrimination of radon isotopes will result in different risk estimates from actual situations, a special attention should be paid to thoron and its concentration should be accordingly measured as well as the radon concentration.},
doi = {10.1063/1.2132270},
journal = {Review of Scientific Instruments},
number = 11,
volume = 76,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}