The measurement method of gamma ray air absorbed dose rate based on LaBr3(Ce) detector
10.13491/j.issn.1004-714X.2021.02.007
- VernacularTitle:基于溴化镧探测器的γ射线空气吸收剂量率的测量方法
- Author:
Qinjian CAO
1
;
Sanqiang XIA
1
;
Meng HE
2
;
Liye LLU
1
;
Yunshi XIAO
1
;
Xiaodun LI
1
;
Yan JIAO
1
Author Information
1. China Institution for Radiation Protection, Taiyuan 030006 China.
2. China Nuclear Power Engineering Co.,Ltd，Beijing 100840 China.
- Publication Type:RadiationMonitoring/OriginalArticles
- Keywords:
LaBr3 Detector;
Gamma Spectrum-dose Conversion Function;
In-situ Gamma Spectrometer
- From:
Chinese Journal of Radiological Health
2021;30(2):154-158
- CountryChina
- Language:Chinese
-
Abstract:
Objective Based on the lanthanum bromide scintillator detector, the calculation method of G(E) function was developed to measure the air absorbed dose rate. Methods Firstly, the gamma energy spectrumof the lanthanum bromide detector were simulated and the response functions with different energies were determined with Monte Carlo simulation method. Then, the G(E) function was calculated by the least square method. Finally, the air absorbed dose rate measured by the lanthanum bromide detector using G(E) function conversion method was compared with the theoretical calculation value based on the point source experiments. Results The experimental verification results showed that the relative deviation between thecalculated value with G(E) function and the theoretical calculation value wasmostly controlled within ± 6%, which verified the accuracy of G(E) function. Conclusion The results showed that the method of G(E) function could be applied to calculate the gamma radiation dose rate based on the in-situ the gamma spectrum with LaBr3 detector.
