Gamma-ray response functions for scintillation and semiconductor detectors
Gamma-ray response functions for scintillation and semiconductor detectors
复制标题
闪烁和半导体探测器的伽马射线响应函数
DOI：
10.1016/0168-9002(89)90582-2
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
K. Marlow
中科院分区：
文献类型：
--
作者：
D. Mitchell;H. M. Sanger;K. Marlow
一个伽马射线探测器的响应函数模型已经开发，使各种闪烁或高纯度锗探测器的能量范围为50千电子伏至3兆电子伏的光谱计算。一组32个经验确定的参数被用来描述检测器的效率和相互作用事件的概率。该模型还计算散射辐射，衰减，符合事件检测和随机堆积的影响。该模型对于各种探测器类型和配置的准确性和普遍适用性超过了迄今为止存在的能力。计算精确的谱模板的能力是使用线性回归进行低分辨率谱的放射化学分析的要求。介绍了碘化钠测量切尔诺贝利核反应堆事故沉降物的实例分析。探测器响应模型还提供了一种计算探测器对任意光子通量分布（例如由辐射传输代码计算的泄漏光谱）的响应的方法。
A gamma-ray detector response function model has been developed which enables computation of spectra for a variety of scintillation or high purity germanium detectors over the energy range 50 keV to 3 MeV. A set of 32 empirically determined parameters are used to describe the detector efficiency and interaction event probabilities. The model also computes the effects of scattered radiation, attenuation, coincidence event detection, and random pileup. The accuracy and general applicability of this model for a variety of detector types and configurations surpasses capabilities existing heretofore. The ability to compute accurate spectral templates is a requirement for radiochemical analysis of low resolution spectra using linear regression. An example analysis of a sodium iodide measurement of fallout from the Chernobyl nuclear reactor accident is presented. The detector response model also provides a means of computing the response of a detector to an arbitrary photon flux profile such as leakage spectrum computed by a radiation transport code.