Measuring efficiency of filter-sampling method with ZnS(Ag) scintillation counter.
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概要
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It is important to know the over-all counting efficiency of measuring apparatus. In this work, the counting efficiency of ZnS (Ag) scintillation counter was discussed with regard for counting radon daughter products sampled on a filter paper. The results are as follows; (1) It is unsuitable to use a counting efficiency for sources such as U3O8 or Am-241 instead of using radon short-lived daughter products. (2) The counting efficiency of ZnS (Ag) scintillation counter is decided from results obtained by counting radon short-lived daughter products on a membrane filter with gridded ionization chamber. (3) The over-all counting efficiency is obtained from product of the counting efficiency of detector, the emerging efficiency and the sampling efficiency.
- 日本保健物理学会の論文
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