Badawi Mohamed S, Abd-Elzaher Mohamed, Thabet Abouzeid A, El-khatib Ahmed M
Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Appl Radiat Isot. 2013 Apr;74:46-9. doi: 10.1016/j.apradiso.2012.12.011. Epub 2012 Dec 28.
This work provides an empirical formula to calculate the FEPE for different detectors using the effective solid angle ratio derived from experimental measurements. The full energy peak efficiency (FEPE) curves of the (2″(*)2″) NaI(Tl) detector at different seven axial distances from the detector were depicted in a wide energy range from 59.53 to 1408keV using standard point sources. The distinction was based on the effects of the source energy and the source-to-detector distance. A good agreement was noticed between the measured and calculated efficiency values for the source-to-detector distances at 20, 25, 30, 35, 40, 45 and 50cm.
