1. Empirical Formulae to Calculate Full-Energy Peak Attenuation Coefficients of Well-Type NaI (Tl) Detectors
- Author
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Al-Mugren Ks, El-Khatib Am, Abbas Mi, Badawi Ms, El-Bayoumi Em, and Thabet Aa
- Subjects
Nuclear and High Energy Physics ,Physics::Instrumentation and Detectors ,business.industry ,Chemistry ,Attenuation ,Isotropy ,Detector ,Electrical engineering ,Energy Engineering and Power Technology ,Function (mathematics) ,Computational physics ,Nuclear Energy and Engineering ,Elemental analysis ,Attenuation coefficient ,Empirical formula ,business ,Waste Management and Disposal ,Energy (signal processing) - Abstract
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.
- Published
- 2017