摘要
论述了地-空界面上天然宇宙中子流的来源;从理论上建立了描述地-空界面上大气中子辐射场的数学-物理模型。在地-空界面上大气快中子注量率与慢热中子注量率不仅与大气参数有关,而且还与地表介质的物质组成有关,尤其是地表介质的含水量有关。理论与实测结果均表明,地-空界面上天然中子流随气象的变化而变化,随地表含水量的增加而减少。
This paper describes the origins of natural neutron flux on the air-ground interface. Some (mathematic)-physical equations that describe the natural neutron radiation field are theoretically established. In the natural neutron radiation field, the natural neutron flux is considered into fast neutron group (E>0.1 MeV) and slow-thermal neutron group according to neutron energy. From the equations, the (intensity) of fast neutron flux and slow-thermal neutron flux is dependent not only on the composition and density of atmosphere, but also on that of soils or rocks, especially, on the water content in the soils or rocks. The intensity of neutron flux varies with the atmosphere conditions and is inversely proportional to the water content of soils or rocks, this has been verified by the results of measurements on the surface of the Earth.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第6期588-592,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家自然科学基金资助项目(40074037)
