Theoretical Estimation of Geometry Dependent Photon Detection Efficiency of Nai (tl)crystal of Different Size for Various Sources to Detector Distances
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Date
2009-06
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Addis Ababa University
Abstract
In this project the variation of the intrinsic efficiency of the Na I (Tl) detector
against the source detector distance has been calculated for different gamma ray
energy of 0.1, 0.2, 0.4, 0.6 1, 5, 7 and 10MeV and taking in to account various
source to detector distance, ranging from 0 to 10 cm. The intrinsic efficiency depends
not only on energy of photons but also on the geometry configuration of source and
detector and source to detector distances. The intrinsic efficiency variation can be
analyzed by the mean chord path length of the photon in the detector and the linear
attenuation coefficient of photon in the detector
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Keywords
Theoretical Estimation of Geometry