Publications

The present work is essentially con cerned to introduce a hybrid analyt ical-numerical method to cal cu late the geo met ri cal, the to tal, and the full-en ergy peak ef fi ciency of the spher i cal NaI(Tl) detec tor for using isotropic radiat ing g-ray point sources. In ad di tion, it cal cu lates the av er age path lengths trav elled by the pho ton in side the de tec tor ac tive me dium, in or der to study the characteristics of the source-to-detector con figurations. This method was depended mainly on the cal cu la tion of the solid an gle sub tended by the ra dio ac tive point sources, which were sit u ated at var i ous lo ca tions from the de tec tor sur face and the pho tons path lengths through the detec tor active medium. Also, taking into account the attenuation coef ficients of all the ab sorb ers be tween the source and the de tec tor ma te rial it self. The ob tained re sults were com pared against one data set pub lished to show the method's pos si bil ity in the cal i bra - tion pro cess.