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Radiation Protection Dosimetry Advance Access originally published online on June 14, 2005
Radiation Protection Dosimetry 2005 117(4):414-418; doi:10.1093/rpd/nci311
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Development of a radon trap device using a corona discharge

Yuji Yamada1,*, Akira Koizumi1, Koji Ishikawa2, Yukio Hishinuma2 and Katsuyoshi Tatenuma2

1 National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
2 KAKEN Co., Mito-Institute, 1044 Hori, Mito, Ibaraki 310-0903, Japan

* Corresponding author: yj_yamad{at}nirs.go.jp

Received February 4, 2005, amended May 16, 2005, accepted May 22, 2005

Radon is one of the noble gases, which are chemically inert and do not make any reactants under normal conditions. In this experiment we demonstrated an enigmatic reaction between radon and fluorine when a corona discharge is used as a promoter. Distinctive changes in radon concentrations were caused by the discharge and a trap efficiency of >99.5% was estimated. The mass balance between the trapped and the released radon was found to be reasonable. This indicates the existence of chemical reactions with radon. This trap phenomenon has application as a technique for reducing radon concentration in radon-contaminated air. It is possible that this technique will be applicable to other noble gases.


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