摘要
本文采用蒙特卡罗程序模拟得到241Am、137Cs发出的能量分别为60 keV和662 keV的γ射线对干土和水的质量衰减系数,从而标定土壤密度、水含量与两种射线的透射率的函数表达式.模拟检测表明,由该表达式测量同种干土制备的土壤样品的土壤密度和水含量精确度较高,可满足实际测量要求.
Mass attenuation coefficients of water and dry soil can be got relative to 60 keV and 662 keV emitted in 241Am and 137Cs by the Monte Carlo simulation, thus the function expressions in correlation between soil density, water content and penetration rates is demarcated. Simulation tests show that, the soil density and water content of soil samples prepared by the same dry soil is measured precisely, and can meet the practical measurement requirements.
出处
《湖南文理学院学报（自然科学版）》
CAS
2012年第3期22-23,32,共3页
Journal of Hunan University of Arts and Science(Science and Technology)
