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Abbas MI. A novel analytical method to calibrate cylindrical side-hole type sodium iodide scintillation detectors. Appl Radiat Isot 2024; 205:111178. [PMID: 38232490 DOI: 10.1016/j.apradiso.2024.111178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 12/08/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
Geometrical and absolute efficiencies play a significant role in the calibration of radioactivity measuring systems, which are regularly complicated. A novel analytical method of efficiency calibration is proposed for cylindrical side-hole type sodium iodide scintillation detectors. Cylindrical side-hole type sodium iodide scintillation detectors have a cylindrical side-hole passing perpendicularly on the sodium iodide crystal axis, which is gathered in the aluminum cover. This detector is a setup for low-level gamma radiation measurement, because of the close 4π solid angle correlated with it, this setup is convenient when low-energy radiation requires efficient detection. Also, the 4π gamma-ray counting is an established way for direct activity measurements and is remarkably well suited for radionuclides with complex gamma-ray spectra. This novel approach depends on the calculation of two primary factors, the photon path length inside the detector active material, and the solid angle, delimited by the radiation source-detector system. In addition, the attenuation of photons by the sodium iodide crystal covering substance is also included by determining the photon path length through this substance. The novel analytical approach calculates the total and geometrical efficiencies of this kind of detector. In comparison, the differences with the published data in the literature indicate that the current approach is favorable in the efficiency measurement of the cylindrical side-hole type sodium iodide scintillation detectors.
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Affiliation(s)
- Mahmoud I Abbas
- Physics Department, Faculty of Science, Alexandria University, 21511, Alexandria, Egypt.
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Abbas MI, Badawi MS, Thabet AA, Kopatch YN, Ruskov IN, Grozdanov DN, Noureddine S, Fedorov NA, Gouda MM, Hramco C, Abd-Elzaher M, Hamzawy A, Elsafi M, El-Khatib AM. Efficiency of a cubic NaI(Tl) detector with rectangular cavity using standard radioactive point sources placed at non-axial position. Appl Radiat Isot 2020; 163:109139. [PMID: 32561067 DOI: 10.1016/j.apradiso.2020.109139] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 02/29/2020] [Accepted: 03/18/2020] [Indexed: 11/17/2022]
Abstract
Low cost scintillation detectors as compared with HPGe detectors are considered to be one of most important radiation detection tools. Therefore, these detectors can be manufactured in different shapes and work at room temperature without any cooling systems, which added an extra advantage to it. This work presents a study of a cubic detector with a rectangular cavity in different experimental setup geometries, using standard point-like gamma-ray sources, where the efficiency of the detector in these geometries was the target to be studied. According to this aim, the data from the experimental measurements was used to determine the detector efficiency. An analytical calculation of the detector efficiency was done by using a new mathematical expression, this mathematical expression depends on the efficiency transfer technique and effective solid angle calculations. To support the mathematical model, the source-to-detector arrangement was simulated by Geant4 Monte Carlo code. All the compared efficiency results were found to be promising and trusted based on the calculated deviation percentages.
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Affiliation(s)
- Mahmoud I Abbas
- Physics Department, Faculty of Science, Alexandria University, 21511, Alexandria, Egypt.
| | - Mohamed S Badawi
- Physics Department, Faculty of Science, Beirut Arab University, Beirut, Lebanon.
| | - Abouzeid A Thabet
- Department of Medical Equipment Technology, Faculty of Allied Medical Sciences, Pharos University in Alexandria, Egypt.
| | - Yu N Kopatch
- Joint Institute for Nuclear Research (JINR), Dubna, Russia.
| | - Ivan N Ruskov
- Joint Institute for Nuclear Research (JINR), Dubna, Russia; Institute for Nuclear Research and Nuclear Energy (INRNE), BAS, Sofia, Bulgaria.
| | - D N Grozdanov
- Joint Institute for Nuclear Research (JINR), Dubna, Russia; Institute for Nuclear Research and Nuclear Energy (INRNE), BAS, Sofia, Bulgaria.
| | - Salam Noureddine
- Physics Department, Faculty of Science, Lebanese University, Beirut, Lebanon.
| | - N A Fedorov
- Joint Institute for Nuclear Research (JINR), Dubna, Russia; Faculty of Physics, Lomonosov Moscow State University (MSU), Moscow, Russia.
| | - Mona M Gouda
- Physics Department, Faculty of Science, Alexandria University, 21511, Alexandria, Egypt.
| | - C Hramco
- Joint Institute for Nuclear Research (JINR), Dubna, Russia; Institute of Chemistry, Academy of Science of Moldova, Chisinau, Republic of Moldova.
| | - Mohamed Abd-Elzaher
- Department of Basic and Applied Sciences, Faculty of Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt.
| | - A Hamzawy
- Physics Department, Al-Jamoum University College, Umm Al-Qura University, Al-Jamoum, Saudi Arabia.
| | - Mohamed Elsafi
- Physics Department, Faculty of Science, Alexandria University, 21511, Alexandria, Egypt.
| | - Ahmed M El-Khatib
- Physics Department, Faculty of Science, Alexandria University, 21511, Alexandria, Egypt.
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Abbas MI. Evaluation of a Closed-End Coaxial High-Purity Germanium Cylindrical Detector Efficiency Using a Simplified Geometrical Approach. NUCL TECHNOL 2017. [DOI: 10.13182/nt09-a9098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mahmoud I. Abbas
- Beirut Arab University, Faculty of Science Physics Department, P.O. Box 115020 Riad El Solh 1107 2809, Beirut, Lebanon
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Validation of new mathematical formulae for calculating well-type gamma-ray detector efficiencies. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2016. [DOI: 10.1016/j.jtusci.2015.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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