%0 Journal Article %T Effects of the Detector-Collimator on the Gamma-Ray Response Function for a NaI(Tl) Detector in a Constant Time of Counts %A حسین توکلی عنبران %A Miri Hakimabad, Seyyed Hashem %A Izadi Najafabadi, Reza %J Journal of Applied Sciences %@ 1812-5654 %D 2009