Self-attenuation effect correction methods employed for gamma-ray spectrometry: A critical review study

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-02-28 DOI:10.1016/j.radphyschem.2025.112665

A. Barba-Lobo

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引用次数: 0

Abstract

The usage of gamma-ray spectrometry has become generalized due to several important advantages that offers versus other radiometric techniques such as alpha-particle spectrometry or liquid scintillation counting. When using gamma-ray spectrometry, the full-energy peak efficiency, FEPE, must be accurately and precisely obtained for a wide range of sample chemical compositions, apparent densities and thicknesses, as well as geometries and energies. For this, the self-attenuation effect corrections must be properly applied for each case in order to transform the calibration sample FEPE into problem sample FEPE. Nowadays, different experimental and simulated methodologies such as Cutshall and Appleby models, and LabSOCS, EFFTRAN, DETEFF, PENELOPE and Geant4, respectively, are generally applied to obtain the problem sample FEPE. However, in many cases, self-attenuation effect corrections can be not properly applied. For this reason, the aim of this study is to comprehensively critical review many different experimental and simulated methodologies usually used to apply self-attenuation effect corrections, offering exhaustive discussions about their proper use as well as proposals to improve many different aspects related to them, and making deep comparisons among their advantages and disadvantages. Moreover, an exhaustive comparison among FEPEs obtained using experimental and simulated methodologies was addressed. In the case of the sample pretreatment, this study also offers a wide discussion of many aspects related to their homogenization process regarding the chemical composition and compaction. In addition, the proper selection of the multielement technique for the major element concentrations is also widely discussed in this study, where an accurate measurement of major element concentrations is essential to properly obtain the sample mass attenuation coefficient which is needed to apply self-attenuation effect corrections.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.