DOAJ Open Access 2020

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

Marcelo Bessa Nisti Marcelo Francis Máduar Catia Heloisa Rosignoli Saueia Fernanda Cavalcante Barbara Paci Mazzilli

Abstrak

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.

Topik & Kata Kunci

Medical physics. Medical radiology. Nuclear medicine Radioactivity and radioactive substances

Penulis (5)

Marcelo Bessa Nisti

Marcelo Francis Máduar

Catia Heloisa Rosignoli Saueia

Fernanda Cavalcante

Barbara Paci Mazzilli

Format Sitasi

APA MLA BibTeX

Nisti, M.B., Máduar, M.F., Saueia, C.H.R., Cavalcante, F., Mazzilli, B.P. (2020). Optimization of the gamma-ray spectrometry counting time based on uncertainties of radionuclides concentration in samples. https://doi.org/10.15392/bjrs.v8i2.1197

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Informasi Jurnal

Tahun Terbit: 2020
Sumber Database: DOAJ
DOI: 10.15392/bjrs.v8i2.1197
Akses: Open Access ✓