原子能科学技术2012，Vol.46Issue(12)：1486-1491,6.
准直D-T中子束穿过大块板状聚乙烯样品积分实验
Integral Experiment of Large Slab Polyethylene Samples With 14.8 MeV Collimated Neutron Beams
摘要
Abstract
An experimental facility for measuring the secondary neutron emission spectra from slab sample with collimated D-T neutron source based on time-of-flight (TOF) technique has been established at China Institute of Atomic Energy (CIAE). The measurement of the neutrons leakage spectra from polyethylene slab samples of different thickness at 30-and 50-was carried out firstly. The measured results were compared with the calculated ones by MCNP simulation. The angle dependent neutron energy spectra of the neutron source, influence of the target material on the neutron source, width of pulse beam and detection efficiency were considered carefully in the simulation. The experimental results agree with the calculated results within the experimental uncertainties.关键词
积分实验/泄漏中子谱/飞行时间法/聚乙烯样品/MCNPKey words
integral experiment/neutron leakage spectrum/time-of-flight technique/polyethylene sample/MCNP分类
数理科学引用本文复制引用
聂阳波,鲍杰,阮锡超,任杰,周祖英..准直D-T中子束穿过大块板状聚乙烯样品积分实验[J].原子能科学技术,2012,46(12):1486-1491,6.基金项目
中国核工业集团公司核数据专题基金资助项目(4160109) （4160109）
