天然中子源中子测水技术的初步研究  

Study on the determination of water content by measuring natural neutron flux on the ground-atmosphere interface

作　　者：葛良全[1] 赖万昌[1] 林延昌[1] 叶森钢[1] 黄元清[1] 

机构地区：[1]成都理工大学应用核技术与自动化工程学院,四川成都610059

出　　处：《核电子学与探测技术》2004年第1期5-7,共3页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金资助项目(40074037)

摘　　要：论述了基于天然中子源的中子测水技术基本原理、仪器设备与方法技术以及在成都地区某地的试验结果。与人工中子源中子测水技术相比,虽然大气中子源方法的灵敏度较差,但避免了人工中子源的辐射防护与管理难题。这对于一些确定地层含水率要求不高,而又需长期监测的场合,如工程地质填图与地质环境动态监测等,天然中子源方法中子测水技术具有一定的应用价值。This paper proposes a new type of neutron moisture gauge which employes the natural neutron flux as the neutron source. The paper discusses the origin and characters of natural neutron flux on the ground-atmosphere interface. Although the sensitivity of natural neutron moisture gauge with the natural neutron flux source is as not good as that of an artificial neutron source, it resolves the problems of the neutron shield and escapes some necessary management procedures for radioisotopes. The new natural neutron moisture gauge can be used to determine the water content of soil in the area of engineering geological mapping and geological environment monitoring.

关 键 词：天然中子源 中子测水技术 工程地质 中子水分计 辐射防护 地质环境动态监测 

分 类 号：P623[天文地球—地质矿产勘探]