Abstract
To improve detection sensitivity for interesting radionuclides in measurements of environmental samples by Broad Energy Germanium detectors, the Pulse Shape Discrimination method using rise-time ratio is introduced. A certified soil sample and a typical squid-ash sample were measured by a well-shielded BEGe spectrometer. Minimum Detection Activities for the 722.9 keV and 949.8 keV peaks from the squid-ash sample were decreased by about 26% and 35% respectively. The method performs well especially when the main background comes from gamma radionuclides in samples.
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