TITLE:
Direct Analytical Method to Calculate Photopeak Efficiency and Photopeak Attenuation Coefficient of NaI(Tl) Well-Type Detector
AUTHORS:
K. S. Al-Mugren, Mahmoud I. Abbas, Eman M. El-Bayoumi, N. S. Aly
KEYWORDS:
NaI(Tl) Well-Type Scintillation Detector, Full-Energy Peak Efficiency, Photopeak Attenuation Coefficient, Gamma-Ray Point Sources
JOURNAL NAME:
World Journal of Nuclear Science and Technology,
Vol.6 No.2,
April
28,
2016
ABSTRACT: In this paper full-energy peak (photopeak) efficiency and photopeak attenuation
coefficient of 3'' × 3'' NaI(Tl) well-type scintillation detector were
calculated using gamma-rayisotropic radiating point sources (with photon
energy: 0.245, 0.344, 0.662, 0.779, 0.964, 1.1732, 1.333 and 1.408 MeV) placed
outside the detector well. These energies were obtained from 152Eu, 137Cs
and 60Co. The relations between the full energy peak efficiency and
photopeak attenuation coefficients, were plotted vs. photon energy at different
sources to detector distance, and it found that the full energy peak efficiency
decreased by increasing the distance between the source and the detector.