PGNAA方法学的发展与现状

王兴华; 孙洪超; 姚永刚; 肖才锦; 张贵英; 金象春; 华龙; 周四春

doi:10.7538/tws.2014.27.04.0251

PGNAA方法学的发展与现状

1.
成都理工大学,四川成都610059
2.
中国原子能科学研究院,北京102413
3.
中国辐射防护研究院,山西太原030006

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- 刊出日期: 2014-11-19

Development and Status of Prompt Gamma Neutron Activation Analysis Technique Methodology

1.
Chengdu University of Technology, Chengdu 610059,China
2.
China Institute of Atomic Energy, Beijing 102413, China
3.
China Institute For Radiation Protection, Taiyuan 030006, China

摘要

摘要: 瞬发伽马中子活化分析（PGNAA）为非破坏性、在线测量的核分析方法。目前国际上有30多座研究堆建立了PGNAA实验室。本文介绍了三种定量瞬发伽马活化分析方法：相对法、校准曲线法、k₀因子法，阐述了基本原理及其应用领域，以及针对短寿命核素高精度测量的束流斩波器技术，针对大样品测量带来的中子自吸收和伽马自屏蔽效应的内标法。此外还简介了基于CARR堆的热中子瞬发伽马活化分析装置进展情况，对国内的PGNAA问题进行了探讨。
- PGNAA /
- k₀法 /
- 束流斩波器;内标法
Abstract: Prompt Gamma Neutron Activation Analysis (PGNAA) is one of the nondestructive and On-line measurement of nuclear analytical methods, There are more than 30 PGNAA laboratories which are established based on the research reactor currently. The basic principle and the application field of three kinds of analytical method of PGNAA were introduced, such as the relative comparison method、calibration method、k₀factor method. The short life nuclides is proposed using the beam chopper technique in order to improve the measurement accuracy. The internal standard method was proposed for that large sample neutron measurement that brings self absorption and gamma-ray self shielding effect. The PGNAA system was introduced at CARR. It provides methodology reference to establish the prompt gamma activation analysis on the base of CARR for our country.
- PGNAA /
- k₀ method /
- Beam chopper

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参考文献(37)

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PGNAA方法学的发展与现状

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出版历程

Development and Status of Prompt Gamma Neutron Activation Analysis Technique Methodology

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出版历程

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