Title

Calibration of a single hexagonal NaI(Tl) detector using a new numerical method based on the efficiency transfer method

Document Type

Article

Abstract

Gamma-ray detector systems are important instruments in a broad range of science and new setup are continually developing. The most recent step in the evolution of detectors for nuclear spectroscopy is the construction of large arrays of detectors of different forms (for example, conical, pentagonal, hexagonal, etc.) and sizes, where the performance and the efficiency can be increased. In this work, a new direct numerical method (NAM), in an integral form and based on the efficiency transfer (ET) method, is used to calculate the full-energy peak efficiency of a single hexagonal NaI(Tl) detector. The algorithms and the calculations of the effective solid angle ratios for a point (isotropic irradiating) gamma-source situated coaxially at different distances from the detector front-end surface, taking into account the attenuation of the gamma-rays in the detector's material, end-cap and the other materials in-between the gamma-source and the detector, are considered as the core of this (ET) method. The calculated full-energy peak efficiency values by the (NAM) are found to be in a good agreement with the measured experimental data.

Publication Date

1-21-2015

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.nima.2014.10.056

Volume

771

Keywords

Effective solid angle ratio, Efficiency transfer method (ET), Full-energy peak efficiency, Hexagonal NaI(Tl) detector, Numerical analytical method (NAM)

ISSN

01689002

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