A method to calculate the gamma ray detection efficiency of a cylindrical NaI (Tl) crystal

Given a wide range application of NaI(Tl) detector in industrial and medical sectors, computation of the related detection efficiency in different distances of a radioactive source, especially for calibration purposes, is the subject of radiation detection studies. In this work, a 2in both in radius...

Full description

Saved in:
Bibliographic Details
Published inJournal of instrumentation Vol. 13; no. 5; p. P05019
Main Authors Ahmadi, S., Ashrafi, S., Yazdansetad, F.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 14.05.2018
Subjects
Angles (geometry)
Cesium 137
Cesium isotopes
Computer simulation
Efficiency
Gamma rays
Scintillation counters
Sensors
Online AccessGet full text
ISSN1748-0221
1748-0221
DOI10.1088/1748-0221/13/05/P05019

Cover

More Information
Summary:Given a wide range application of NaI(Tl) detector in industrial and medical sectors, computation of the related detection efficiency in different distances of a radioactive source, especially for calibration purposes, is the subject of radiation detection studies. In this work, a 2in both in radius and height cylindrical NaI (Tl) scintillator was used, and by changing the radial, axial, and diagonal positions of an isotropic 137Cs point source relative to the detector, the solid angles and the interaction probabilities of gamma photons with the detector's sensitive area have been calculated. The calculations present the geometric and intrinsic efficiency as the functions of detector's dimensions and the position of the source. The calculation model is in good agreement with experiment, and MCNPX simulation.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/13/05/P05019