Open AccessDevelopment of multi-systems for measurement of radionuclide absolute activity
Author(s) -
Profa Cruz,
Carlos José da Silva,
Anderson Leiras,
André Luiz Lopes Quadros,
Johnny de Almeida Rangel,
Akira Iwahara
Publication year - 2021
Publication title -
brazilian journal of radiation sciences
Language(s) - English
Resource type - Journals
ISSN - 2319-0612
DOI - 10.15392/bjrs.v9i2c.1660
Subject(s) - radionuclide , coincidence , liquid scintillation counting , standard uncertainty , radiochemistry , standardization , nuclear engineering , nuclear physics , materials science , physics , environmental science , nuclear medicine , chemistry , measurement uncertainty , computer science , engineering , medicine , alternative medicine , pathology , quantum mechanics , operating system
The development of a multi-systems triple-to-double coincidence ratio (TDCR) and coincidence 4pb-g methods, based on liquid scintillation to radionuclide standardization is presented in this work. The adjustments of multi-systems 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.