Title

Efficiency of a cubic NaI(Tl) detector with rectangular cavity using standard radioactive point sources placed at non-axial position

Document Type

Article

Abstract

Low cost scintillation detectors as compared with HPGe detectors are considered to be one of most important radiation detection tools. Therefore, these detectors can be manufactured in different shapes and work at room temperature without any cooling systems, which added an extra advantage to it. This work presents a study of a cubic detector with a rectangular cavity in different experimental setup geometries, using standard point-like gamma-ray sources, where the efficiency of the detector in these geometries was the target to be studied. According to this aim, the data from the experimental measurements was used to determine the detector efficiency. An analytical calculation of the detector efficiency was done by using a new mathematical expression, this mathematical expression depends on the efficiency transfer technique and effective solid angle calculations. To support the mathematical model, the source-to-detector arrangement was simulated by Geant4 Monte Carlo code. All the compared efficiency results were found to be promising and trusted based on the calculated deviation percentages.

Publication Date

9-1-2020

Faculty

Faculty of Applied Health Sciences Technology

Subject Area

Physical Sciences, Physics and Astronomy

Indexed in Scopus

yes

Indexed in Web Of Science

yes

DOI

https://doi.org/10.1016/j.apradiso.2020.109139

Volume

163

Keywords

Cubic detector, Effective solid angle and full-energy peak efficiency, Efficiency transfer, Geant4 simulation

ISSN

09698043

eISSN

18729800

Share

COinS