Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy
One of the main problems in quantitative gamma-ray spectroscopy is the determination of detection efficiency, for different energies, source-detector geometries, and composition of samples or sources. There are, in principle, three approaches to this issue: experimental, numerical, and semiempirical...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Spectroscopy |
| Online Access: | http://dx.doi.org/10.1155/2018/5392658 |
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| author | Jelena Krneta Nikolić Milica Rajačić Dragana Todorović Marija Janković Nataša Sarap Gordana Pantelić Ivana Vukanac |
| author_facet | Jelena Krneta Nikolić Milica Rajačić Dragana Todorović Marija Janković Nataša Sarap Gordana Pantelić Ivana Vukanac |
| author_sort | Jelena Krneta Nikolić |
| collection | DOAJ |
| description | One of the main problems in quantitative gamma-ray spectroscopy is the determination of detection efficiency, for different energies, source-detector geometries, and composition of samples or sources. There are, in principle, three approaches to this issue: experimental, numerical, and semiempirical. Semiempirical approach is based on the calculation of the efficiency for the measured sample on the basis of an experimental efficiency measured on the same detector, but with a calibration source that can be of different size, geometry, density, or composition—the so-called efficiency transfer. The aim of this paper is to analyze the semiempirical approach, using EFFTRAN and MEFFTRAN software as a typical example. These software were used in the Department of Radiation and Environmental Protection, Vinča Institute of Nuclear Sciences, on three HPGe detectors. The results were compared to the experimentally obtained efficiency, and further validation is performed by measuring reference materials issued within the framework of several interlaboratory intercomparisons. The analysis of the results showed that the efficiency transfer produces good results with the discrepancies within the limits of the measurement uncertainty. Also, for intercomparison measurement, utest criterion for the trueness of the result was applied showing that the majority of the obtained results were acceptable. Some difficulties were identified, and the ways to overcome them were discussed. |
| format | Article |
| id | doaj-art-9bc838c8e42644d8a3d0afce70e9804a |
| institution | Kabale University |
| issn | 2314-4920 2314-4939 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Spectroscopy |
| spelling | doaj-art-9bc838c8e42644d8a3d0afce70e9804a2025-02-03T01:24:06ZengWileyJournal of Spectroscopy2314-49202314-49392018-01-01201810.1155/2018/53926585392658Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray SpectroscopyJelena Krneta Nikolić0Milica Rajačić1Dragana Todorović2Marija Janković3Nataša Sarap4Gordana Pantelić5Ivana Vukanac6Institute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaInstitute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaInstitute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaInstitute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaInstitute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaInstitute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaInstitute of Nuclear Sciences “Vinča”, University of Belgrade, Mike Petrovica Alasa 12-16, 11001 Belgrade, SerbiaOne of the main problems in quantitative gamma-ray spectroscopy is the determination of detection efficiency, for different energies, source-detector geometries, and composition of samples or sources. There are, in principle, three approaches to this issue: experimental, numerical, and semiempirical. Semiempirical approach is based on the calculation of the efficiency for the measured sample on the basis of an experimental efficiency measured on the same detector, but with a calibration source that can be of different size, geometry, density, or composition—the so-called efficiency transfer. The aim of this paper is to analyze the semiempirical approach, using EFFTRAN and MEFFTRAN software as a typical example. These software were used in the Department of Radiation and Environmental Protection, Vinča Institute of Nuclear Sciences, on three HPGe detectors. The results were compared to the experimentally obtained efficiency, and further validation is performed by measuring reference materials issued within the framework of several interlaboratory intercomparisons. The analysis of the results showed that the efficiency transfer produces good results with the discrepancies within the limits of the measurement uncertainty. Also, for intercomparison measurement, utest criterion for the trueness of the result was applied showing that the majority of the obtained results were acceptable. Some difficulties were identified, and the ways to overcome them were discussed.http://dx.doi.org/10.1155/2018/5392658 |
| spellingShingle | Jelena Krneta Nikolić Milica Rajačić Dragana Todorović Marija Janković Nataša Sarap Gordana Pantelić Ivana Vukanac Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy Journal of Spectroscopy |
| title | Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy |
| title_full | Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy |
| title_fullStr | Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy |
| title_full_unstemmed | Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy |
| title_short | Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy |
| title_sort | semiempirical efficiency calibration in semiconductor hpge gamma ray spectroscopy |
| url | http://dx.doi.org/10.1155/2018/5392658 |
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