Influence of Sample Thickness on Detection Efficiency of High Purity Germanium Gamma Spectrometer

摘要

Seven soil samples with different packing thickness and the same batch were prepared and measured by high-purity germanium gamma spectrometer.The relationship between the thickness of soil sample and the detection efficiency was obtained under the premise of considering the influence of sample self-absorption for four different energy nuclides of210Pb(46.5 keV),226 Ra(352 keV),232 Th(583 keV)and40K(1460.8 keV).