IX.20.Calculation of detection efficiency for NaI(Tl) Gamma detector using Monte Carlo simulation скачать в хорошем качестве

IX.20.Calculation of detection efficiency for NaI(Tl) Gamma detector using Monte Carlo simulation

NOM : MENACER Prénom : Fatma Affiliation : université kasdi merbah ouargla Courriel : menacer.fatima@univ-ourgla Résumé : The aim of this work is to calculate the efficiency of a NaI (Tl) scintillation detector for a point source of radiation using a Monte Carlo method. A MATLAB program was developed. After testing the program, we simulated a 2”x2” cylindrical NaI (Tl) detector for energies ranging from 50keV to 3000keV, and for detector-dimension values smaller, equal to, and greater than the detector dimensions. We found that the efficiency of the detector decreased with increasing distance. To find out how changing the size of the detector affects its efficiency, we ran the program for a 1”x1” detector; the obtained results showed that the efficiency of the larger detector has greater values than the efficiency values of the smaller detector for a specific energy. This simulation program enables us to provide data tables for experimental researchers in order to determine or choose the source-detector dimensions and energies in their experimental works.