Optimization and characterization of a coincidence beta-ray spectrometer

被引：2

作者：

Sun, Ruoyu ^{[1
]}

Atanackovic, Jovica ^{[1
,2
]}

Hanu, Andrei R. ^{[1
,3
]}

Cheng, Xingzhi ^{[1
]}

Byun, Soo Hyun ^{[1
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4L8, Canada

[2] Ontario Power Generat, Whitby, ON L1N 9E3, Canada

[3] Bruce Power, Tiverton, NS N0G 2T0, Canada

来源：

APPLIED RADIATION AND ISOTOPES | 2024年 / 204卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Beta spectroscopy; coincidence operation; silicon detector; plastic scintillator detector; DETECTOR;

D O I：

10.1016/j.apradiso.2023.111144

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Aimed at beta spectrometry and dosimetry for mixed beta-gamma fields, a Si-plastic scintillator coincidence betaray spectrometer has been developed. The spectrometer collects pure beta-ray spectra by rejecting the gammaray detection events through coincidence. Both pulse height and arrival time of each detection event were recorded in list mode by a compact digital processing system. Spectral measurements were carried out using mixed beta-gamma fields from 90Sr/90Y and 137Cs sources for various beta and gamma count rates to evaluate the system performance. Coincidence beta spectra were collected for four fixed beta count rates (7.3-241 cps) from 90Sr/90Y while the gamma count rate from 137Cs was varied from 500 to 8000 cps. The coincidence beta spectrum was stable and unperturbed by the gamma detection events for most measurements while notable perturbation was observed in the low energy region when the beta to gamma count ratio is very low.

引用

页数：5

共 8 条

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