所属单位：材料科学工程学院
教研室：物理教研室
发表刊物：Chinese Physics C
项目来源：省、市、自治区科技项目
关键字：NIPGA; hydrogen content; D-T neutron generator; MCNP; nonlinear
摘要：If a D-T generator is used as a neutron source to simultaneously measure the content of carbon, hydrogen and oxygen in a multicomponent sample by NIPGA (Neutron Induced Prompt Gamma-ray Analysis), the 14MeV neutron flux can be regarded as a constant value. The relationship between the production of the hydrogen characteristic gamma rays and its content is nonlinear. In this paper, we use MCNP (Monte Carlo N-Particle Transport code) to simulate the relationship and analyze it. In practical measurement of the characteristic gamma-ray, it’s impossible to get the net count. Therefore, we use the experiment to obtain the relationship between the hydrogen content and the total count of its characteristic gamma-rays. If we use the relationship combined with the simulation result to calculate the hydrogen content, the metrical precision can be much increased. The deviation of hydrogen content between NIPGA and chemical analysis is less than 0.25%, which meets the requirement of coal industry.
第一作者：程道文
论文类型：期刊论文
卷号：34
期号：5
页面范围：2
ISSN号：0254-3052
是否译文：否
CN号：11-5641/O4
发表时间：2010-05-01