固体气泡损伤探测器中子探测效率的刻度  

Calibration of Neutron Detection Efficiency of Bubble Detectors

作　　者：郭士伦[1] 涂彩清[1] 容超凡 翟光年 王志强 王玉兰[1] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413

出　　处：《原子能科学技术》2000年第3期212-215,共4页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目! (1 880 1 5 8);核工业科学基金资助项目!(J94F0 1 0 2 2 )

摘　　要：在 2× 1 7MV串列加速器上用7Li(p ,n) 7Be、T(p ,n) 3He、D(d ,n) 3He和T(d ,n) 4 He核反应产生的 2 0keV～ 19MeV单能快中子对中国原子能科学研究院研制的固体气泡损伤探测器进行了刻度。结果表明 :该探测器对快中子的探测阈能约为 10 0keV ,阈能处中子探测效率急剧上升约 3个数量级 ,阈能以上效率曲线基本平坦 ,中子探测效率约为 1 5× 10 - 4。A calibration has been carried out on neutron detection efficiency of bubble detectors prepared by China Institute of Atomic Energy at the tandem accelerator 2×1.7 MV by monoe nergetic neutrons of 20 keV～19 MeV from 7 Li(p,n) 7Be, T(p,n) 3He, D(d,n) 3He and T(d,n) 4He reactions. It shows that the bubble detectors have a threshold energy～100 keV. The detection efficiency increases steeply to three order of magnitude at the threshold. The detection efficiency above the threshold is nearly flat with value～1.5×10 -4 . The bubble detectors can be used to measure neutron energy spectrum and as neutron dosimeter.

关 键 词：固体气泡损伤探测器 中子探测效率 中子剂量计 

分 类 号：TL815.7[核科学技术—核技术及应用]