Bayesian estimation of the relative deviations between activities in the radionuclide standardization
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Proteção Radiológica - SBPR
2019
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| _version_ | 1876461226373939200 |
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| author | F. L. Cacais |
| author_facet | F. L. Cacais |
| contents | Bayesian estimation of the relative deviations between activities in the radionuclide standardization F. L. Cacais J. U. Delgado V. M. Loayza J. A. Rangel Biología Bayesian statistic Radionuclide metrology Radioactive source preparation The dissemination of the activity is performed from radionuclide sources prepared in a sequence of dilutions and weighing methods. In this process, the activity of the source can be estimated statistically from the deposited mass and the activity concentration of the master solution. After preparation, the activity is obtained from absolute or relative measurement methods. However, the methods of activity determinations used may not fulfill the necessary independence of the conventional statistical approach due to the presence of possible correlations between activities that arise with the use of the same standardized sources or with the same method of quantity measurements. In this paper, Bayesian estimates for the relative deviation of activities and their uncertainty were obtained in order to evaluate the performance of the main sources’ preparation method. The estimate result (0.55 ± 0.27) % for a data set of radionuclide standardization performed between 2017 and 2018 at LNMRI, although close to zero, shows one should investigate possible effects affecting the preparation and measurement of the sources. This Bayesian estimate was validated by monte carlo simulation method. 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280901004 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.3B Vol.7 |
| format | Artículo científico |
| id | redalyc_722280901004 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Sociedade Brasileira de Proteção Radiológica - SBPR |
| spellingShingle | Bayesian estimation of the relative deviations between activities in the radionuclide standardization F. L. Cacais Biología Bayesian statistic Radionuclide metrology Radioactive source preparation Bayesian estimation of the relative deviations between activities in the radionuclide standardization F. L. Cacais J. U. Delgado V. M. Loayza J. A. Rangel Biología Bayesian statistic Radionuclide metrology Radioactive source preparation The dissemination of the activity is performed from radionuclide sources prepared in a sequence of dilutions and weighing methods. In this process, the activity of the source can be estimated statistically from the deposited mass and the activity concentration of the master solution. After preparation, the activity is obtained from absolute or relative measurement methods. However, the methods of activity determinations used may not fulfill the necessary independence of the conventional statistical approach due to the presence of possible correlations between activities that arise with the use of the same standardized sources or with the same method of quantity measurements. In this paper, Bayesian estimates for the relative deviation of activities and their uncertainty were obtained in order to evaluate the performance of the main sources’ preparation method. The estimate result (0.55 ± 0.27) % for a data set of radionuclide standardization performed between 2017 and 2018 at LNMRI, although close to zero, shows one should investigate possible effects affecting the preparation and measurement of the sources. This Bayesian estimate was validated by monte carlo simulation method. 2019 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280901004 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.3B Vol.7 |
| title | Bayesian estimation of the relative deviations between activities in the radionuclide standardization |
| topic | Biología Bayesian statistic Radionuclide metrology Radioactive source preparation |
| url | https://www.redalyc.org/articulo.oa?id=722280901004 |