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A method for the selection of the optimum counting conditions in a ZnS(Ag) scintillation detector
L Pujo1, J A Suarez-Navarro, M Montero
1Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT-IMA), Madrid, Spain. luis.pujol@cedex.es
Abstract:
The well-known criteria for the selection of the optimum counting conditions in a ZnS(Ag) scintillation detector seem to restrict its applicability. These do not consider simultaneously operating voltage and electronic threshold variation to reach the best counting conditions. Therefore, a more general method for the determination of the optimum counting conditions in ZnS(Ag) scintillation detectors is proposed. In this method, a relationship between voltage and electronic threshold is derived for counting efficiency. In order to test the method, quality control procedures have been carried out as well as the determination of gross alpha activity in environmental samples.