Journal of Nuclear Energy Science & Power Generation TechnologyISSN: 2325-9809

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Research Article, J Nucl Ene Sci Power Generat Technol Vol: 6 Issue: 2

Empirical Formulae to Calculate Full-Energy Peak Attenuation Coefficients of Well-Type NaI (Tl) Detectors

Abbas MI1, El-Bayoumi EM2, Badawi MS1,3*, Thabet AA4, El-Khatib AM1 and Al-Mugren KS5
1Physics Department, Faculty of Science, Alexandria University, 21511 Alexandria, Egypt.
2Physics and Chemistry Department, Faculty of Education, Alexandria University, Alexandria, Egypt.
3Department of Physics, Faculty of Science, Beirut Arab University, Beirut, Lebanon.
4Department of Medical Equipment Technology, Faculty of Allied Medical Sciences, Pharos University in Alexandria, Alexandria, Egypt.
5Physics Department, Faculty of Science, Princess Nourah Bint Abdulrahaman University, 11544-55532 Riyadh, Saudi Arabia.
Corresponding author : Dr. Mohamed Salem Badawi
Department of Physics, Faculty of Science, Beirut Arab University, Beirut, Lebanon
Tel: +2-01005154976
Received: February 04, 2017 Accepted: March 08, 2017 Published: March 17, 2017
Citation: Abbas MI, El-Bayoumi EM, Badawi MS, Thabet AA, El-Khatib AM, et al. (2017) Empirical Formulae to Calculate Full-Energy Peak Attenuation Coefficients of Well-Type NaI (Tl) Detectors. J Nucl Ene Sci Power Generat Technol 6:2.doi: 10.4172/2325-9809.1000171


NaI (Tl) detectors have been widely used during the recent years based on their response to γ-rays, which is significant mainly for the elemental analysis of neutron-induced prompt γ-rays. The detector functions significantly influence the analysis results, especially the detector efficiency. The present study focused on this problem and has been made of the contribution of the full-energy peak attenuation in the calculation of the detector efficiency. An empirical formula has been derived to calculate the full-energy peak attenuation for 3″×3″ NaI (Tl) well-type detector using isotropic radiating axial point sources. The measured efficiency values are used in this method to find the peak attenuation coefficient for this particular source-to-detector geometry. In addition, the obtaining values were used to calculate the detector full-energy peak efficiency, and compared it with the measured ones. The calculated values of the detector efficiency are found to be in a good agreement with experimental data. This gives indication about the ability to extend the calculated efficiency values to build an efficiency curve as a function of γ-ray energy as not many radioactive sources exist for the standardization process.

Keywords: NaI (Tl) well-type detector; Radioactive point source; Full-energy peak attenuation coefficient; Empirical formula

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