Potential reduction interior point algorithm unfolding of neutron energy spectrum measured by recoil proton method

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英文篇名：Potential reduction interior point algorithm unfolding of neutron energy spectrum measured by recoil proton method 作者：王冠鹰 ; 韩然 ; 欧阳晓平 ; 何锦成 ; 颜俊尧 英文作者：Guan-Ying Wang;Ran Han;Xiao-Ping Ouyang;Jin-Cheng He;Jun-Yao Yan;North China Electric Power University;Beijing Institute of Spacecraft Environment Engineering;Northwest Institute of Nuclear Technology; 英文关键词：neutron energy spectrum;;recoil proton;;Geant4;;potential reduction interior point algorithm;;unfolding 中文刊名：KNWL 英文刊名：中国物理C 机构：North China Electric Power University;Beijing Institute of Spacecraft Environment Engineering;Northwest Institute of Nuclear Technology; 出版日期：2017-05-15 出版单位：Chinese Physics C 年：2017 期：v.41 基金：supported by Fundamental Research Funds for Central Universities(2016XS61);; Opening Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect 语种：英文; 页：KNWL201705025 页数：5 CN：05 ISSN：11-5641/O4 分类号：185-189

摘要

A reconstruction algorithm for unfolding neutron energy spectra has been developed,based for the first time on the potential reduction interior point algorithm.This algorithm can be easily applied to neutron energy spectrum reconstruction in the recoil proton method.We transform the neutron energy spectrum unfolding problem into a typical nonnegative linear complementarity problem.The recoil proton energy spectrum and response matrix at angles of 0?and 30?are generated by the Geant4 simulation toolkit.Several different neutron energy test spectra are also employed.It is found that this unfolding algorithm is stable and provides efficient,accurate results.
        A reconstruction algorithm for unfolding neutron energy spectra has been developed,based for the first time on the potential reduction interior point algorithm.This algorithm can be easily applied to neutron energy spectrum reconstruction in the recoil proton method.We transform the neutron energy spectrum unfolding problem into a typical nonnegative linear complementarity problem.The recoil proton energy spectrum and response matrix at angles of 0?and 30?are generated by the Geant4 simulation toolkit.Several different neutron energy test spectra are also employed.It is found that this unfolding algorithm is stable and provides efficient,accurate results.

引文

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