A hybrid analytical–numerical method for full energy peak efficiency calibration of a NaI detector
| Autor: | K.M. El-Kourghly, M. Abdelati, A. Abdelsalam, W. El-Gammal, M.S. El-Tahawy, W. Osman |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics Source code media_common.quotation_subject Numerical analysis Monte Carlo method Detector 010403 inorganic & nuclear chemistry 01 natural sciences 030218 nuclear medicine & medical imaging 0104 chemical sciences Computational physics 03 medical and health sciences 0302 clinical medicine Calibration Range (statistics) Point (geometry) Instrumentation Energy (signal processing) media_common |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 976:164181 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2020.164181 |
| Popis: | A hybrid analytical–numerical method is proposed to determine the Full Energy Peak Efficiency (FEPE) of a NaI bare crystal for a point γ -source in the energy range 48–2040 keV. The efficiency is calculated at all possible source locations with respect to the detector and at a maximum Source-to-Detector (S–D) distance of 50 cm. The method combines an analytical formula used for total efficiency calculation with numerically calculated Peak-to-Total (P/T) ratios. The FEPE efficiencies are calculated by integrating the combined analytical formula. A computer code is written using the C programming language to solve the integration using Simpson’s rule. The calculated values of the FEPE are found to be in agreement with these calculated using the Monte Carlo (MC) method with a maximum relative difference of about 2.5%. The main advantage of the proposed method is the extremely reduced runtime of calculation in comparison with the MC method. |
| Databáze: | OpenAIRE |
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