手持式γ谱仪用核辐射探测器综述

Review of the Detectors for Hand-held Gamma Spectrometers

介绍了γ谱仪探测器基本性能评价指标,分析了手持式γ能谱测量中常用的核辐射探测器,如高纯锗、碘化钠、碘化铯、碲锌镉和溴化镧等的主要性能特点,指出碲锌镉和溴化镧的产生与发展,以及高纯锗谱仪小型化是近年来手持式γ谱仪探测器技术的主要进展。为了应对不断增长的手持式放射性核素识别应用需求,建议加强碲锌镉和溴化镧探测器研制及其在手持式谱仪中的应用研究。

Basic performance indexes of gamma spectroscopic detectors are introduced. The main characteristics of detectors commonly used in hand-held gamma spectroscopy are analyzed, including high purity germanium, sodium iodide doped with thallium, cesium iodide doped with thallium, cadmium zinc telluride and lanthanum halide doped with cerium. It is pointed out that the advent and development of CdZnTe and LaBr3：Ce, and miniaturization of the HPGe spectrometer are the main progresses in hand- held spectroscopic detector techniques during the recent years. To satisfy the rising requirement of hand- held radioactive nuclide identification, it is recommended to enhance research on CdZnTe and LaBr3：Ce detectors and their application in hand-held spectrometers.