Gross beta activity in water Cerenkov Method
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2015
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INTERNATIONAL CONFERENCE ON RADIATION AND APPLICATIONS IN VARIOUS FIELDS OF RESEARCH, 3rd
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Resumo
Cerenkov effect occurs when the charged particle velocity in a medium is larger than the speed of light in that
medium. Cerenkov radiation is produced in water by ß-emitting radionuclides of energy greater than 265 keV.
The advantages of the Cerenkov method for gross beta activity determination are simplicity of sample
preparation, low cost, possibility of reusing the sample, easy discard and efficiency unaffected by chemical
quenching. The aim of this study is to compare the background, efficiency, Minimum Detectable Activity (MDA)
and Figure Of Merit (FOM) for the determination of ß-emitting radionuclides using two scintillation counters,
Quantulus and Hidex. In order to evaluate these parameters, for both equipment, three standard solutions of gross
beta activity were analyzed in triplicate. The performance of the determination of gross beta activity in water was
evaluated by participating in a Proficiency Test organized by Instituto de Radioproteção e Dosimetria. The values
obtained for the normalized standard deviation (D) was below 2, indicating a good precision and accuracy for
both equipment.
Como referenciar
NISTI, M.B.; FERREIRA, A.O.; SAUEIA, C.H.R.; MAZZILLI, B.P. Gross beta activity in water Cerenkov Method. In: INTERNATIONAL CONFERENCE ON RADIATION AND APPLICATIONS IN VARIOUS FIELDS OF RESEARCH, 3rd, June 8-12, 2015, Budva, Montenegro. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/25687. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.