中子活化分析非弹性散射与俘获时间分布的Geant4模拟  

Geant4-Based Simulation of the Inelastic and Capture Time Distribution In Neutron Activation Analysis

作　　者：李建[1] 马玉刚[1] 龚亚林 张伟 马赛[1] 王二永[1] 王振超[3] 张鹏飞[1] 马纯辉 赵广义[1] 陆景彬[1] 

机构地区：[1]吉林大学物理学院,长春130012 [2]丹东东方测控技术股份有限公司,丹东118002 [3]黑龙江省科学院技术物理研究所,哈尔滨150086

出　　处：《核电子学与探测技术》2014年第8期972-975,共4页Nuclear Electronics & Detection Technology

基　　金：国家重大科学仪器设备开发专项(2012YQ240121)资助

摘　　要：利用蒙特卡罗程序包Geant4,模拟了14 Me V中子在水、聚乙烯、碳酸钙和氧化铁4种不同介质中的非弹性散射时间与俘获时间;通过分析脉冲宽度为10μs的14 Me V脉冲中子在这4种不同介质中的非弹性散射与俘获时间分布,得到非弹性散射与俘获时间门的宽度;利用得到的非弹性散射与俘获时间门,获得了14 Me V脉冲中子在聚乙烯介质中的净非弹性散射γ谱与净俘获γ谱。The inelastic and capture time of 14 MeV neutron with a pulse width of 10 μs into H2 O、Polyethy-lene、CaCO3、Fe2O3 were simulated using Geant4,a Monte Carlo simulation software.The inelastic and capture time distribution of 14 MeV neutron in these materials were analyzed ,and the inelastic and capture time -gating windows were selected .The inelastic and capture γspectra of 14 MeV neutron in Polyethylene were acquired u-sing the inelastic and capture time -gating windows .

关 键 词：GEANT4 中子活化 非弹性散射时间 俘获时间 

分 类 号：O571.33[理学—粒子物理与原子核物理]