Author(s)

K. S. Al-Mugren¹, Mahmoud I. Abbas², Eman M. El-Bayoumi³, N. S. Aly³

¹Physics Department, Faculty of Science, Princess Nourah Bint Abdulrahaman University, Riyadh, Saudi Arabia.
²Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
³Physics & Chemistry Department, Faculty of Education, Alexandria University, Alexandria, Egypt.

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.

NaI(Tl) Well-Type Scintillation Detector, Full-Energy Peak Efficiency, Photopeak Attenuation Coefficient, Gamma-Ray Point Sources

Al-Mugren, K. , Abbas, M. , El-Bayoumi, E. and Aly, N. (2016) Direct Analytical Method to Calculate Photopeak Efficiency and Photopeak Attenuation Coefficient of NaI(Tl) Well-Type Detector. World Journal of Nuclear Science and Technology, 6, 115-124. doi: 10.4236/wjnst.2016.62012.