The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors
Monte Carlo (MC) simulations are increasingly being used as an alternative or supplement to the gamma spectrometric method in determining the full energy peak efficiency (FEPE) necessary for radionuclide identification and quantification. The MC method is more advantageous than the experimental meth...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573322002911 |
| _version_ | 1811243440918233088 |
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| author | Esra Uyar Mustafa Hicabi Bölükdemir |
| author_facet | Esra Uyar Mustafa Hicabi Bölükdemir |
| author_sort | Esra Uyar |
| collection | DOAJ |
| description | Monte Carlo (MC) simulations are increasingly being used as an alternative or supplement to the gamma spectrometric method in determining the full energy peak efficiency (FEPE) necessary for radionuclide identification and quantification. The MC method is more advantageous than the experimental method in terms of both cost and time. Experimental calibration with standard sources is difficult, especially for specimens with unusually shaped geometries. However, with MC, efficiency values can be obtained by modeling the geometry as desired without using any calibration source. Modeling the detector with the correct parameters is critical in the MC method. These parameters given to the user by the manufacturer are especially the dimensions of the crystal and its front edge, the thickness of the dead layer, dimensions, and materials of the detector components. This study aimed to investigate the effect of the front edge geometry of the detector crystal on efficiency, so the effect of rounded and sharp modeled front edges on the FEPE was investigated for <300 keV with three different HPGe detectors in point and volume source geometries using PHITS MC code. All results showed that the crystal should be modeled as a rounded edge, especially for gamma-ray energies below 100 keV. |
| first_indexed | 2024-04-12T14:07:17Z |
| format | Article |
| id | doaj.art-3084e355562b4eb8ba26e4ef1697b82f |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-04-12T14:07:17Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-3084e355562b4eb8ba26e4ef1697b82f2022-12-22T03:30:02ZengElsevierNuclear Engineering and Technology1738-57332022-11-01541142204225The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectorsEsra Uyar0Mustafa Hicabi Bölükdemir1Gazi University, Faculty of Sciences, Department of Physics, Ankara, Turkey; Gazi University, Graduate School of Natural and Applied Sciences, Department of Physics, Ankara, TurkeyGazi University, Faculty of Sciences, Department of Physics, Ankara, Turkey; Corresponding author.Monte Carlo (MC) simulations are increasingly being used as an alternative or supplement to the gamma spectrometric method in determining the full energy peak efficiency (FEPE) necessary for radionuclide identification and quantification. The MC method is more advantageous than the experimental method in terms of both cost and time. Experimental calibration with standard sources is difficult, especially for specimens with unusually shaped geometries. However, with MC, efficiency values can be obtained by modeling the geometry as desired without using any calibration source. Modeling the detector with the correct parameters is critical in the MC method. These parameters given to the user by the manufacturer are especially the dimensions of the crystal and its front edge, the thickness of the dead layer, dimensions, and materials of the detector components. This study aimed to investigate the effect of the front edge geometry of the detector crystal on efficiency, so the effect of rounded and sharp modeled front edges on the FEPE was investigated for <300 keV with three different HPGe detectors in point and volume source geometries using PHITS MC code. All results showed that the crystal should be modeled as a rounded edge, especially for gamma-ray energies below 100 keV.http://www.sciencedirect.com/science/article/pii/S1738573322002911HPGeFull energy peak efficiencyPHITSMonte Carlo simulationRounded edgeSharp edge |
| spellingShingle | Esra Uyar Mustafa Hicabi Bölükdemir The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors Nuclear Engineering and Technology HPGe Full energy peak efficiency PHITS Monte Carlo simulation Rounded edge Sharp edge |
| title | The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors |
| title_full | The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors |
| title_fullStr | The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors |
| title_full_unstemmed | The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors |
| title_short | The effect of front edge on efficiency for point and volume source geometries in p-type HPGe detectors |
| title_sort | effect of front edge on efficiency for point and volume source geometries in p type hpge detectors |
| topic | HPGe Full energy peak efficiency PHITS Monte Carlo simulation Rounded edge Sharp edge |
| url | http://www.sciencedirect.com/science/article/pii/S1738573322002911 |
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