物理学报Issue(12)：1-7,7.DOI:10.7498/aps.63.128701
一种基于成像板的能量卡阈式快中子图像测量方法
A metho d of fast-neutron imaging with energy threshold based on an imaging plate
摘要
Abstract
A method of fast-neutron imaging with energy threshold is presented in this paper, which is based on an imaging plate covered with a metal foil and a hydrogen-rich foil in order to reduce the contribution from the neutrons with a lower energy such as the scattering neutrons from samples. The method is capable of effectively reducing the relative sensitivity of the imaging detector to neutrons with energies in a certain energy range. The 14 MeV neutron imaging structure with an energy threshold is designed, and it includes a TR imaging plate covered with an about 150 µm Pb foil and a 500 µm polyethylene foil. The calculated results show that for the present structure its sensitivity to the neutrons with smaller than 8 MeV is reduced by 30% less than that to the neutrons with 14 MeV. The fast-neutron radiography is validated experimentally on a DT neutron generator (K400). The results indicate that the neutron imaging structure with an energy threshold is available to remove the edge enhancement effect introduced by scattering neutrons from samples.关键词
快中子照相/蒙特卡罗模拟/能量卡阈/成像板Key words
fast-neutron raidography/Monte Carlo simulation/energy threshold/imaging plate引用本文复制引用
章法强,祁建敏,张建华,李林波,陈定阳,谢红卫,杨建伦,陈进川..一种基于成像板的能量卡阈式快中子图像测量方法[J].物理学报,2014,(12):1-7,7.基金项目
国家自然科学基金青年科学基金(批准号:11005095)和中国工程物理研究院科学基金(批准号:2011B01013017)资助的课题.@@@@Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No.11005095) and the Science Foundation of China Academy of Engineering Physics (Grant No.2011B01013017) （批准号:11005095）
