Prototype test of a portable thyroid dose monitoring system using gamma-ray spectrometers

In case of a severe nuclear accident, radioiodine monitoring of the thyroid must be carried out for a large number of residents and emergency workers. In the present study, we developed a portable thyroid dose monitoring system consisting of two independent gamma-ray spectrometers and a radiation sh...

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Bibliographic Details
Published in:Radiation measurements 2020-06, Vol.134, p.106292, Article 106292
Main Authors: Nishino, Sho, Tanimura, Yoshihiko, Yoshitomi, Hiroshi, Takahashi, Masa
Format: Article
Language:English
Subjects:
Internal exposure
Radioactive iodine
Thyroid dose monitor
Thyroid equivalent dose
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Summary:In case of a severe nuclear accident, radioiodine monitoring of the thyroid must be carried out for a large number of residents and emergency workers. In the present study, we developed a portable thyroid dose monitoring system consisting of two independent gamma-ray spectrometers and a radiation shield, which could be used under high background radiation conditions. Two types of prototype thyroid monitors were realized; one utilizing CdZnTe detectors for emergency workers and the other employing LaBr3(Ce) detectors for members of the public. As a result of the performance test, it was confirmed that both monitors effectively assess thyroid equivalent doses of
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2020.106292