Autores: Akira Iwahara; Fellipe Souza da Silva; PAULO ALBERTO LIMA DA CRUZ; Anderson Leiras; Andre Quadros; Johnny Rangel; Carlos José da Silva.
Tema: Metrologia de radionuclídeos
Resumo:
The development of a multi-system triple-to-double coincidence ratio (TDCR) and coincidence 4-y methods, based on liquid scintillation to radionuclide standardization is presented in this work. The adjustments of multi-system were made using standards of 3H and 14C and 60Co. The initial stage was performing measurements of pure beta emitters 3H, 63Ni, and 90Sr90Y standard solutions by TDCR. The results were consistent within the standard uncertainty. Measurements will be performed with a beta-gamma 60Co in a comparison to the SIR / BIPM to assess the multi-system’s performance.
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