Uncertainty evaluation in activity measurements with HPGe using two relative methods
Radionuclide metrology laboratories aim to provide radioactive standards for detector calibrations in nuclear safety areas with low uncertainties. Such standards are applied in nuclear industries, according to the requirements of monitoring programmes. The standard radionuclides of 133Ba, 152Eu and...
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| Format: | Article |
| Language: | English |
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2022-12-01
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| Series: | Brazilian Journal of Radiation Sciences |
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| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2070 |
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| author | Maria Candida Moreira de Almeida Jose Ubiratan Delgado Ronaldo Lins Silva Roberto Poledna Regio S Gomes Alfredo L Ferreira Filho |
| author_facet | Maria Candida Moreira de Almeida Jose Ubiratan Delgado Ronaldo Lins Silva Roberto Poledna Regio S Gomes Alfredo L Ferreira Filho |
| author_sort | Maria Candida Moreira de Almeida |
| collection | DOAJ |
| description | Radionuclide metrology laboratories aim to provide radioactive standards for detector calibrations in nuclear safety areas with low uncertainties. Such standards are applied in nuclear industries, according to the requirements of monitoring programmes. The standard radionuclides of 133Ba, 152Eu and 166mHo are suitable to the determination of efficiency curves in HPGe detectors due to their multi-gamma emissions, which are intense and well separate in the spectrum. With efficiency curves it is possible to do the measurements without needing to use standards. In this work was made a verifying of the uncertainties obtained for the two relative methods: comparative (sample-standard) and efficiency curve. The total uncertainties obtained by sample-standard method varied from 0.4 to 1.2 % (k=1). The results using efficiency curve method are between 0.9 to 2.2 % (k=1). |
| format | Article |
| id | doaj-art-8e7f91c7441b4927ae05dab8e40311d1 |
| institution | Matheson Library |
| issn | 2319-0612 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj-art-8e7f91c7441b4927ae05dab8e40311d12025-07-16T00:43:32ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122022-12-0110411310.15392/2319-0612.2022.20701688Uncertainty evaluation in activity measurements with HPGe using two relative methodsMaria Candida Moreira de Almeida0https://orcid.org/0000-0002-1862-5207Jose Ubiratan Delgado1https://orcid.org/0000-0003-1198-7886Ronaldo Lins Silva2Roberto Poledna3Regio S Gomes4https://orcid.org/0000-0003-1282-2629Alfredo L Ferreira Filho5Institute of Radiation Protection and DosimetryInstitute of Radiation Protection and DosimetryInstitute of Radiation Protection and DosimetryInstitute of Radiation Protection and DosimetryInstitute of Radiation Protection and DosimetryInstitute of Radiation Protection and DosimetryRadionuclide metrology laboratories aim to provide radioactive standards for detector calibrations in nuclear safety areas with low uncertainties. Such standards are applied in nuclear industries, according to the requirements of monitoring programmes. The standard radionuclides of 133Ba, 152Eu and 166mHo are suitable to the determination of efficiency curves in HPGe detectors due to their multi-gamma emissions, which are intense and well separate in the spectrum. With efficiency curves it is possible to do the measurements without needing to use standards. In this work was made a verifying of the uncertainties obtained for the two relative methods: comparative (sample-standard) and efficiency curve. The total uncertainties obtained by sample-standard method varied from 0.4 to 1.2 % (k=1). The results using efficiency curve method are between 0.9 to 2.2 % (k=1).https://bjrs.org.br/revista/index.php/REVISTA/article/view/2070uncertaintygamma emittersgermanium detectorsradionuclide metrology |
| spellingShingle | Maria Candida Moreira de Almeida Jose Ubiratan Delgado Ronaldo Lins Silva Roberto Poledna Regio S Gomes Alfredo L Ferreira Filho Uncertainty evaluation in activity measurements with HPGe using two relative methods Brazilian Journal of Radiation Sciences uncertainty gamma emitters germanium detectors radionuclide metrology |
| title | Uncertainty evaluation in activity measurements with HPGe using two relative methods |
| title_full | Uncertainty evaluation in activity measurements with HPGe using two relative methods |
| title_fullStr | Uncertainty evaluation in activity measurements with HPGe using two relative methods |
| title_full_unstemmed | Uncertainty evaluation in activity measurements with HPGe using two relative methods |
| title_short | Uncertainty evaluation in activity measurements with HPGe using two relative methods |
| title_sort | uncertainty evaluation in activity measurements with hpge using two relative methods |
| topic | uncertainty gamma emitters germanium detectors radionuclide metrology |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2070 |
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