Publication Date:
2018-03-16
Description:
An in situ detection method for beta-ray distribution was developed. The method uses the gamma-ray sensitivity difference between two scintillators: a cadmium–tungstate (CdWO 4 ) scintillator and a plastic scintillator. The gamma-ray sensitivity ratios for several gamma-ray sources such as 137 Cs, 60 Co, 22 Na, and 54 Mn were experimentally characterized. The sensitivity ratio for 137 Cs between the CdWO 4 and plastic scintillators was 8 ± 0.32, while the sensitivity ratio for beta rays from 90 Sr was 1.03 ± 0.006. The beta-ray contributions to the total counts can be evaluated using this characteristic. A combined beta-ray and gamma-ray source was prepared, and its beta-ray distribution was successfully obtained using the proposed method.
Print ISSN:
0018-9499
Electronic ISSN:
1558-1578
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Physics
