A theoretical and experimental research on detection efficiency of HPGe detector for disc source with heterogeneous distribution
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If we treat some heterogeneous distributed media including heterogeneous distributed radioactive sources, radioactive polluted field, “hot point/hot area” and “hot particle” as uniform distributed media, directly affects the accuracy of the detection efficiency calibrated, introduced the great metrical deviation. A Standard Normal distribution disc source was simulated by a point source experiment. The detection efficiency of heterogeneous distributed disc source is defined as multiply efficiency function of point source by the probability density function. And then we carried out process of the mathematical integrality and normalization. A description of the analysis and experimental results of this method are presented. The theoretical and experimental calculation of detection efficiency of HPGe detector for heterogeneous distribution disc source is consistent with each other.
KeywordsHeterogeneous distribution Detection efficiency Hot particle HPGE detector
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