Optimization of the gamma-ray spectrometry counting time based on uncertainties of radionuclides concentration in samples

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DOI:

https://doi.org/10.15392/bjrs.v8i2.1197

Palabras clave:

Gamma-ray spectrometry, counting time optimization, HPGe detector

Resumen

This paper aims to propose an easy and fast method of optimization of the gamma-ray spectrometry counting time in determining natural radionuclides (Pb-210, Pb-212, Pb-214, Bi-212, Bi-214 and Ac-228) in order to minimize uncertainties in the concentration. The samples were measured by gamma-ray spectrometry with a hyper-pure germanium detector Canberra, 25% relative efficiency, effective resolution of 1.9 keV on the 1332.5 keV 60Co with associated electronics and coupled to a microcomputer. Multichannel Maestro A65-I model was used for spectrum acquisition and peak net area determination, and WinnerGamma/Interwinner 6.01 software was used for gamma-ray spectra analysis and to calculate the concentrations and associated uncertainties.  The counting times used were 86,000 s and 150,000 s.

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Referencias

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Maestro Software. Maestro for Windows (Emulation software for Gamma Spectroscopy). Model A65-B1Version 3.04, EG&G ORTEC, 1995.

InterwinnerTM 6.0. MCA Emulation, Data Acquisition and Analysis software for Gamma and Alpha Spectroscopy. IW-B32 2004. ORTEC. Oak Ridge, TN, USA, 2004.

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Publicado

2020-06-30

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Cómo citar

Optimization of the gamma-ray spectrometry counting time based on uncertainties of radionuclides concentration in samples. Brazilian Journal of Radiation Sciences (BJRS), Rio de Janeiro, Brazil, v. 8, n. 2, 2020. DOI: 10.15392/bjrs.v8i2.1197. Disponível em: https://bjrs.org.br/revista/index.php/REVISTA/article/view/1197. Acesso em: 17 jul. 2025.