用位置灵敏探测器探测14.7MeV中子在铁样品上的小角度弹性散射截面  

Measuring elastic scattering differential cross sections of 14.7 MeV neutrons on Fe at small angles by means of a large position-sensitive detector

作　　者：戴运生[1] 万代蓉[1] 梁学才[1] 曹建华[1] 

机构地区：[1]四川大学原子核科学技术研究所

出　　处：《核技术》1989年第11期662-664,共3页Nuclear Techniques

摘　　要：用快中子位置灵敏谱仪和伴随粒子飞行时间技术测量了14.7MeV中子在Fe样品上的小角度弹性散射微分截面,给出了3.76°—7.98°角区的测量结果,与所发表的实验数据相比较,在误差范围以内一致,从而证明利用长液闪快中子位置灵敏谱仪这一新技术测量小角散射是可靠的。The elastically scattering differential cross sections of 14.7 MeV neutrons on Fe at angles between 3.76° and 7.98° are measured. The associated particle time-of-flight method is used to select 14.7 MeV neutrons, which originated from T(d, n)4He reaction at the angle near 40° with respect to a 200 keV deuteron beam. The scattering angles and spectra of neutrons are simultaneously determined with a position-sensitive detecting system.The corrections for neutron flux attenuation, multiple scattering and finite geometry were performed by Monte Carlo method. The experimental results were compared with the available data from other work.

关 键 词：中子截面 位置灵敏谱仪 蒙特卡罗法 

分 类 号：O571.553[理学—粒子物理与原子核物理]