双球型便携式中子剂量仪探头的设计  

Design of a Neutron Survey Meter for Double Spherical Detectors

作　　者：李桃生[1] 高建勇 颜强[1] 宫存溃[1] 郑玉宏 乐智希[1] 焦南杰[1] 

机构地区：[1]哈尔滨工程大学核科学与技术学院,黑龙江省哈尔滨市150001

出　　处：《核电子学与探测技术》2010年第11期1483-1487,共5页Nuclear Electronics & Detection Technology

摘　　要：介绍了双球型便携式中子剂量仪探头设计的计算过程,利用MCNP3B程序对双球的中子能量响应进行模拟,基于双球的中子能量响应差异,可确定一个修正因子,对H*(10)的估算值进行修正,使得中子剂量能量响应得到改善。考虑到双球的相互影响问题,对双球的间距和角响应进行了计算,并对影响的原因进行了分析。The design of calculation for double spherical detectors of a neutron survey meter was introduced.The neutron energy responses of two moderators were simulated by MCNP3B program.A correction factor was determined due to a difference response of neutron energy for two moderators.The estimation of H＊（10）was corrected so that the neutron energy response was improved.The relationship between distance of two moderators and angle response were calculated as to the influence of double spherical detectors,and the influence on factors was analyzed.

关 键 词：中子周围剂量当量仪 球形3He计数器 中子能谱 MCNP 

分 类 号：O571.54[理学—粒子物理与原子核物理]