Development of multi-systems for measurement of radionuclide absolute activity

Authors

  • Paulo Alberto Lima da Cruz Instituto de Radioproteção e Dosimetria
  • Carlos Jose da Silva Instituto de Radioproteção e Dosimetria
  • Anderson Leiras Instituto de Radioproteção e Dosimetria
  • Andre Luiz Lopes Quadros Instituto de Radioproteção e Dosimetria
  • Johnny Rangel Instituto de Radioproteção e Dosimetria
  • Akira Iwahara Instituto de Radioproteção e Dosimetria

DOI:

https://doi.org/10.15392/bjrs.v9i2C.1660

Keywords:

TDCR, coincidence, multi-systems, radionuclide standardization, radionuclide metrology.

Abstract

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.

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Author Biographies

Paulo Alberto Lima da Cruz, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Carlos Jose da Silva, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Anderson Leiras, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Andre Luiz Lopes Quadros, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Johnny Rangel, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Akira Iwahara, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

References

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YUAN, D. ET AL. Digital Coincidence System for beta-gamma Coincidence Counting. Nu-clear Physics A, Volume 834, 2010, p. 773c–776.

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MÜLLER, J. W., ET AL. Report 52. Journal of the ICRU 1, 1994.

KAWADA, Y. Extended applications and improvement of the 4 coincidence method in the standardization of radionuclides. Electrotechnical Lab., 1972, Tokyo.

BAERG, A. P. Measurement of radioactive disintegration rate by the coincidence method. Metrologia, 1966, v. 2, n. 1, p. 23.

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MALONDA, G. Modelos de Parâmetro Libre en Centelleo Liquido. Editorial CIEMAT, 1995.

BIRKS, J. B. Scintillations from Organic Crystals Specific Fluorescence and Relative Response of Different Radiations, Proc. Phys. Soc. London, 1951, Sect. A64, 874.

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Published

2021-08-08

How to Cite

Lima da Cruz, P. A., da Silva, C. J., Leiras, A., Quadros, A. L. L., Rangel, J., & Iwahara, A. (2021). Development of multi-systems for measurement of radionuclide absolute activity. Brazilian Journal of Radiation Sciences, 9(2C (Suppl.). https://doi.org/10.15392/bjrs.v9i2C.1660

Issue

Vol. 9 No. 2C (Suppl.) (2021)

Section

Congresso Brasileiro de Metrologia das Radiações Ionizantes - CBMRI 2020

License

Copyright (c) 2021 Brazilian Journal of Radiation Sciences

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