碲锌镉探测器对14MeV脉冲中子束的直照响应  

Direct-Radiation Response of CdZnTe Detector to 14 MeV Pulsed Neutron Beam

作　　者：潘洪波[1] 欧阳晓平[1] 张显鹏[1] 李大海[1] 李宏云[1] 邱孟通[1] 李刚[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《原子能科学技术》2009年第4期381-384,共4页Atomic Energy Science and Technology

摘　　要：碲锌镉(CZT)晶体具有优良的材料性能,是一种备受关注的新型核辐射探测器材料。本工作运用MCNP程序模拟了CZT探测器对14 MeV中子的直照响应,且在ING-103型稠密等离子体聚焦装置14 MeV脉冲中子发生器上进行了实验研究。结果表明:CZT探测器对14 MeV脉冲中子的直照响应理论值与实验值有较好的一致性;在包含因子k为2时,实验值的扩展不确定度小于14%;且CZT探测器对14 MeV脉冲中子具有1.28×10-16C.cm2的灵敏度,适用于测量高强度脉冲中子。CdZnTe （CZT） crystal is one of the most attractive materials used for the new type radiation detector due to its excellent material properties. The direct-radiation re- sponse of CZT detector to 14 MeV neutron was calculated by Monte-Carlo code MCNP. The measurement of the CZT detector to 14 MeV neutron was performed on ING-103 pulsed neutron generator. The results indicate that the theoretical value accords with the experimental result. When coverage factor is 2, the expand uncertainty is less than 14%. With the sensitivity of 1.28 × 10^-16 C·cm^2 to 14 MeV neutron, the CZT detector can be applied to the high-intensity pulsed neutron measurement.

关 键 词：碲锌镉探测器 脉冲中子 直照响应 稠密等离子体聚焦装置 

分 类 号：O571.5[理学—粒子物理与原子核物理] TL816.3[理学—物理]