Monte Carlo simulation of soil density and water content by attenuation of dual energy γ ray

In the paper, mass attenuation coefficients of water and dry soil can be got relative to 60 and 66 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. (author)