基于线性放电法的多道脉冲幅度分析器设计  

Design of multi-channel pulse amplitude analyzer based on linear discharge

作　　者：周能 邓可晴 庄文英 ZHOU Neng;DENG Ke-Qing;ZHUANG Wen-Ying(Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;Shanghai Hexu Information Technology Company,Beijing 100102,China;School of Information Management,Beijing Information Science and Technology University,Beijing 100192,China)

机构地区：[1]中国科学院声学研究所噪声与振动重点实验室,北京100190 [2]上海合煦信息科技有限公司,北京100102 [3]北京信息科技大学信息管理学院,北京100192

出　　处：《物探与化探》2022年第1期221-228,共8页Geophysical and Geochemical Exploration

基　　金：国家重点研发计划项目(2017YFC0602100)课题“高分辨航空伽玛能谱与高光谱测量应用示范”(2017YFC0602106)。

摘　　要：多道伽马能谱仪是天然、人工放射性核素测定的必备设备,多道脉冲幅度分析是多道伽马能谱仪的核心,它决定了对核素的分辨能力和分析精度。本文从线性放电法入手,首先介绍了基于线性放电法的多道脉冲幅度分析器的工作原理,给出了分析脉冲幅度和获取能谱道址的方法;其次围绕分析器的8个重要组成部分,详细描述了设计方法,给出了设计依据、设计思路和可实施的方案;最后系统地介绍了多道脉冲幅度分析的工作过程,详细地给出了分析器工作的逻辑时序图,为读者开展此类设计奠定了基础。读者可基于文中给出的工作原理、设计方法和工作逻辑时序图等,再结合现代高科技技术,就可以研制出道宽均匀度好、微分非线性出色、分辨核素能力更强的现代新型多道脉冲分析器,获得能量分辨率更好、测量精度更高的伽马能谱数据,更好地为社会服务。Multi-channel gamma-ray spectrometers are necessary for measuring natural and artificial radionuclides.The core of the multi-channel gamma-ray spectrometers is the multi-channel pulse amplitude analysis,which determines the resolution and analysis accuracy of radionuclides.This study introduces the working principle of a multi-channel pulse amplitude analyzer based on linear discharge and describes the methods for analyzing pulse amplitude and obtaining spectrum peaks.Secondly,this study details the design methods of eight important parts of the multi-channel pulse amplitude analyzer,including the design basis,design idea,and feasible schemes.Finally,this study details the logical sequence diagram of the analyzer,laying a foundation for readers to design a multi-channel pulse amplitude analyzer.Using the working principle,design method,and working logic sequence diagram presented in this paper,as well as modern high technology,readers can develop a new type of modern multi-channel pulse analyzer with uniform channel width,excellent differential nonlinearity,and improved resolution of radionuclides,thus better serving the society using gamma-ray spectrum data with higher energy resolution and high measurement accuracy.

关 键 词：线性放电法 脉冲幅度分析器 工作原理 设计方法 

分 类 号：P631[天文地球—地质矿产勘探]