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New analytical approach to calculate the detector efficiencies of NaI(Tl) using coaxial and off-axis rectangular and parallelepiped sources
Journal article   Peer reviewed

New analytical approach to calculate the detector efficiencies of NaI(Tl) using coaxial and off-axis rectangular and parallelepiped sources

A. Hamzawy
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Vol.768, pp.164-169
21/12/2014
DOI: https://doi.org/10.1016/j.nima.2014.09.013

Abstract

Axis-off source Geometrical efficiency Rectangular source Total efficiency
In this paper, we introduce a direct analytical mathematical method for calculating the geometrical and absolute total efficiencies of gamma-ray NaI(Tl) scintillation detectors using coaxial and off-axis plane (rectangular) sources. The calculations of geometrical and absolute total efficiencies of coaxial and off-axis plane (rectangular) sources are extended to include coaxial and off-axis volumetric (parallelepiped) sources. The current theoretical and the published efficiency values are in good agreement.

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