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Method for determination of gamma and neutron dose components in mixed radiation fields using a high-pressure recombination chamber

Method for determination of gamma and neutron dose components in mixed radiation fields using a... A new method is proposed for the determination of dose components in mixed radiation fields (gamma neutrons) using a recombination chamber. The method involves the determination of the ratio of ionisation currents measured at two different voltages applied to the chamber without the need of determining the saturation current, neither in the radiation field investigated nor during calibration. Therefore, the chamber can be filled with a gas under a pressure much higher than that used in presently available recombination chambers. This paper presents theoretically derived formulae supporting the method and the experimental results of dose component measurements using a high-pressure recombination chamber filled with methane. The method can be used for determining neutron and gamma dose components in the environment, especially in the vicinity of nuclear centres. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Radiation Protection Dosimetry Oxford University Press

Method for determination of gamma and neutron dose components in mixed radiation fields using a high-pressure recombination chamber

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References (4)

Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
Subject
POSTER Presentations
ISSN
0144-8420
eISSN
1742-3406
DOI
10.1093/rpd/ncm063
pmid
17513853
Publisher site
See Article on Publisher Site

Abstract

A new method is proposed for the determination of dose components in mixed radiation fields (gamma neutrons) using a recombination chamber. The method involves the determination of the ratio of ionisation currents measured at two different voltages applied to the chamber without the need of determining the saturation current, neither in the radiation field investigated nor during calibration. Therefore, the chamber can be filled with a gas under a pressure much higher than that used in presently available recombination chambers. This paper presents theoretically derived formulae supporting the method and the experimental results of dose component measurements using a high-pressure recombination chamber filled with methane. The method can be used for determining neutron and gamma dose components in the environment, especially in the vicinity of nuclear centres.

Journal

Radiation Protection Dosimetry – Oxford University Press

Published: Aug 19, 2007

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