Correction for neutron self-shielding and gamma-ray self-absorption in prompt-gamma activation analysis for large and irregularly shaped samples,Journal of Analytical Atomic Spectrometry

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Correction for neutron self-shielding and gamma-ray self-absorption in prompt-gamma activation analysis for large and irregularly shaped samples
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2020-10-22 , DOI: 10.1039/d0ja00364f
László Szentmiklósi _{1,

2,

3,

4} , Zoltán Kis _{1,

2,

3,

4} , Boglárka Maróti _{1,

2,

3,

4} , László Zoltán Horváth _{1,

2,

3,

4}

Affiliation

Prompt-gamma activation analysis (PGAA) is a useful method to determine the elemental composition of bulky samples, where non-destructivity, representativity, and high metrological quality are of great importance. Voluminous samples significantly attenuate both the exciting neutron beam and the emerging gamma radiation within the sample. We have developed a generally applicable correction for the neutron self-shielding and gamma-ray self-absorption effect for large and irregularly shaped samples, based on digital geometry data and Monte Carlo simulations. The numerical correction gives results that agree well with those from destructive sampling.

中文翻译：

大型和不规则形状样品的快速伽马活化分析中的中子自屏蔽和伽马射线自吸收的校正

瞬变伽马活化分析（PGAA）是确定大体积样品元素组成的有用方法，其中非破坏性，代表性和高计量质量非常重要。大量样品会显着衰减样品中激发中子束和新兴的伽马射线。基于数字几何数据和蒙特卡洛模拟，我们已经开发出了适用于大型和不规则形状样品的中子自屏蔽和伽马射线自吸收效应的普遍适用的校正方法。数值校正得出的结果与破坏性采样的结果非常吻合。

更新日期：2020-11-27

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