Half-life of radionuclides determined by the reference source method

M. A. L. da Silva; M. C. M. de Almeida; J. U. Delgado

doi:10.1007/s10967-005-0755-0

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 264: Issue 3

Half-life of radionuclides determined by the reference source method

Authors:

M. A. L. da Silva

M. A. L. da Silva Instituto Militar de Engenharia IME, Pça Gal. Tibúrcio, s/n - Urca, Rio de Janeiro, Brazil

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M. C. M. de Almeida

M. C. M. de Almeida Diretoria de Radioproteção e Segurança - DRS/CNEN Rua General Severiano, 90 - Botafogo, Rio de Janeiro, Brazil

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J. U. Delgado

J. U. Delgado Laboratório Nacional de Metrologia das Radiações Ionizantes-LNMRI/IRD/CNEN Av. Salvador Allende, s/n - Recreio, Rio de Janeiro, Brazil

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Pages:: 571–576

Online Publication Date:: 20 May 2005

Publication Date:: 17 May 2005

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-005-0755-0

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Summary

An approach for half-life determination using the reference source method associated with gamma-spectrometry with a Ge detector is presented. The method reduces the contribution of the type B component of the total uncertainty. The independence of the method regarding the instrumental interferences or radiochemical impurities was evidenced. However, there are some limitations when the method is applied for a genetically-related impurity with the same or very similar energy to that of the radionuclide to be measured, e.g., if ⁹⁹Mo in a ^99mTc sample is present. The measured half-life values are in good agreement with those of the literature and the associated uncertainties are lower than 0.1%.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)