中子能谱测量中的解谱技术研究进展

摘要/Abstract

摘要： 中子能谱解谱技术为中子能谱测量系统必要的组成部分,近几十年来国内外开展了大量研究。本文首先介绍了中子能谱常规解谱流程,包括解谱模型、响应函数、解谱误差等内容;接着详细介绍了国内外中子能谱测量技术研究现状以及中子能谱解谱算法研究现状,包括比较成熟的最小二乘算法、最大熵算法等,也有新兴的神经网络算法、遗传算法等,总结了不同解谱算法的特点;接着介绍了根据不同解谱算法发展的解谱程序,对比了不同解谱算法及程序的优缺点,基于最小二乘算法开发的SAND系列程序和基于最大熵算法开发的MAXED程序是解谱功能强大、使用最广泛的程序;最后梳理了中子能谱解谱方法的发展脉络,总结了国内和国外研究的区别,未来开发包含多种解谱方法的综合性解谱程序具备较强的应用需求。

关键词: 中子能谱测量, 中子能谱解谱方法, 广义最小二乘算法, 最大熵算法, 蒙特卡罗算法, 压缩感知理论

Abstract: Neutron spectrum unfolding technology is a necessary part of the neutron spectrum measurement system. In recent decades, a large number of studies have been carried out at home and abroad. This paper first introduces the conventional resolution process of neutron spectrum, including unfolding model, response function, unfolding spectrum error, etc.; And then introduces in detail the current research status of neutron spectrum measurement technology at home and abroad and the current research status of neutron spectrum unfolding algorithm, including the relatively mature least squares algorithm, maximum entropy algorithm, etc., as well as emerging neural networks algorithm, Genetic algorithms, etc., summarized the characteristics of different spectrum unfolding algorithms; And furtherly, introduced the spectrum unfolding programs developed according to different spectrum unfolding algorithms, and compared the advantages and disadvantages of different spectrum unfolding algorithms and programs. The SAND series programs which were developed based on the least squares algorithm and the MAXED program developed based on the maximum entropy algorithm are the most powerful and widely used programs for spectrum unfolding. Finally, the development context of the neutron spectrum unfolding method is sorted out, and the differences between domestic and foreign research are summarized. The development direction of the spectrum unfolding algorithm is proposed.

Key words: neutron spectrum measurement, neutrons spectrum unfolding, generalized least squares, maximum entropy, Monte Carlo methods, compressed sensing theory

中图分类号:

黄迁明, 刘斌, 陆婷, 王波, 唐松乾, 吕焕文, 应栋川, 翟梓安. 中子能谱测量中的解谱技术研究进展[J]. 辐射防护, 2022, 42(4): 265-279.

HUANG Qianming, LIU Bin, LU Ting, WANG Bo, TANG Songqian, LV Huanwen, YING Dongchuan, ZAI Zian. Progress in research of spectrum unfolding method on neutron spectrum measurement[J]. RADIATION PROTECTION, 2022, 42(4): 265-279.

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