A Figure-of-Merit for Beta Cell Detector Characterization

Foxe, Michael P.¹  Miller, Brian W.¹  Suarez, Rey¹  Hayes, James C.¹ 

[1] Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

关键词: SI SEMICONDUCTOR DETECTORS;    COMPARATIVE EVALUATIONS;    ENERGY RESOLUTION;    PERFORMANCE;    PLASTIC SCINTILLATION DETECTORS;    DETECTION;    EFFICIENCY;    BETA DETECTION;    XENON 131;    XENON 133 Beta Cell;    Detector Characterization;    PNNL;   

DOI  :  10.2172/1258732
RP-ID  :  PNNL--24760
PID  :  OSTI ID: 1258732
Others  :  Other: DN2003000
Others  :  TRN: US1601520

美国|英语

来源: SciTech Connect

【 摘 要 】

In order to decrease the minimum detectable activities (MDAs) of beta-gamma radioxenon detectors, it is important to increase the ability to resolve the individual isotopes. One proposed method for doing this is to increase the energy resolution of the beta cell through the use of silicon detectors. While silicon detectors can improve the energy resolution, it is accompanied with a decrease in detection efficiency compared to plastic scintillator beta cells. Due to the uncertainty on the impact of the competing variables, we have developed a figure-of-merit (FOM) capable of determining the impact of detector parameters on the MDAs. By utilizing the FOM to analyze different detectors, we are able to directly compare current and future detectors and estimate their impact on the radioxenon MDAs.