~2H(d,n)~3He核反应中子注量的伴随粒子法测量  

An associated particle method to measure the neutron flux from the ~2H(d,n)~3He reaction

作　　者：叶邦角[1] H.Nanjyo T.Kobayashi 

机构地区：[1]中国科学技术大学近代物理系,安徽合肥230027 [2]ICEPP University of Tokyo Hongo [3]ICEPP University of Tokyo,Hongo

出　　处：《核电子学与探测技术》2002年第3期200-203,共4页Nuclear Electronics & Detection Technology

摘　　要：2 H(d,n) 3 He核反应单能中子源广泛应用于几 Me V中子的散射和极化实验。采用伴随粒子法测量中子注量 ,用 Si半导体探测器测量 3 He粒子 ,用 0 .8μm Al箔来屏蔽散射的 d束 ,系统可很好地分辨 3 He、d、T和 p,可测 d+束能量到 16 5 ke V,测量结果与用 NE2 13探测器的结果相比较 ,一致性好于97%。The 2H(d,n) 3He reaction is often used as a source of mono engry neutrons with an energy of a few MeV in neutron scattering and polarization experiments. In this paper, an associated particle method for the 2H(d,n) 3He reaction is used. A Si detector is used to detect 3He particles. An Al foil with 0.8μm is used to shield the deuterons scattered from target. 3He, d, T and p particles can be discriminated clearly up to the deuteron energy of 165keV. The measuring result is compared with the result obtained by NE213 detector. The agreement between both results is better than 97%.

关 键 词：测量 核反应 中子注量 伴随粒子法 单能中子源 氦3 氢2 

分 类 号：TL375.4[核科学技术—核技术及应用] O571.5[理学—粒子物理与原子核物理]