Improving Spectroscopic Performance of a Coplanar-Anode High-Pressure Xenon Gamma-Ray Spectrometer
Improving Spectroscopic Performance of a Coplanar-Anode High-Pressure Xenon Gamma-Ray Spectrometer
复制标题
提高共面阳极高压氙伽马射线光谱仪的光谱性能
DOI：
10.1109/tns.2007.903187
复制
发表时间：
2006
影响因子：
1.8
通讯作者：
G. Tepper
中科院分区：
文献类型：
--
作者：
S. Kiff;Zhong He;G. Tepper
高压氙气（HPXe）是国土安全应用中理想的辐射检测介质，因为其具有良好的固有室温能量分辨率、用于大型高效设备的潜力以及在宽温度范围内的稳定性。过去的工作在HPVs已经产生了大直径网格电离室的能量分辨率在662千电子伏之间的3.5和4%半高宽。然而，这些探测器的一个主要限制是由于弗里希网格颤噪引起的分辨率下降。一个共面阳极HPV16检测器已被开发作为一种替代网格室。本报告对该探测器的能量分辨率进行了调查。一个模拟软件包被用来调查的重要物理过程的贡献，测得的峰值展宽。给出了纯H_2O_3和H_2O_3 + 0.2%H_2混合物的实验数据，分析了相互作用位置对能谱的影响。
High-pressure xenon (HPXe) gas is a desirable radiation detection medium for homeland security applications because of its good inherent room-temperature energy resolution, potential for large, efficient devices, and stability over a broad temperature range. Past work in HPXe has produced large-diameter gridded ionization chambers with energy resolution at 662 keV between 3.5 and 4% FWHM. However, one major limitation of these detectors is resolution degradation due to Frisch grid microphonics. A coplanar-anode HPXe detector has been developed as an alternative to gridded chambers. An investigation of this detector's energy resolution is reported in this submission. A simulation package is used to investigate the contributions of important physical processes to the measured photopeak broadening. Experimental data is presented for pure Xe and Xe + 0.2%H2 mixtures, including an analysis of interaction location effects on the energy spectrum.