Development of a method for the gamma emission intensity determination of gaseous radionuclide 123Xe

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-07-22 DOI:10.1016/j.nima.2025.170899

Jianfeng Liang , Feng Xie , Quanlin Shi , Xichao Ruan , Jie Bao , Chunjie Wang , Qingdi Guan , Jianzhong Ni , Xuesong Li , Gongshuo Yu , Jiang Xu , Zhichao Liu

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引用次数: 0

Abstract

A novel method for determining the gamma emission intensity of the gaseous radionuclide ¹²³Xe was developed, combining theoretical derivation and experimental validation. The deviation was based on the decay relationship between ¹²³Xe and its progeny ¹²³I, while accounting for neutron flux fluctuations. The experiment was carried out at the Cockcroft-Walton accelerator of the China Institute of Atomic Energy (CIAE). ¹²³Xe samples were produced by irradiating an enriched ¹²⁴Xe target with neutron beams. Gamma spectrometry measurements of the full-energy peak count rates from the decay of ¹²³Xe and ¹²³I yielded an emission intensity of 48.3(7)% for the 148.9 keV gamma line of ¹²³Xe, with significantly reduced uncertainty. Compared to least-squares fitting method, this method demonstrates superior simplicity and efficacy.

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气态放射性核素123Xe发射强度测定方法的建立

结合理论推导和实验验证，提出了一种测定气态放射性核素123Xe γ辐射强度的新方法。偏差是基于123Xe和它的子代123I之间的衰变关系，同时考虑了中子通量波动。实验是在中国原子能科学研究院（CIAE）的科克罗夫特-沃尔顿加速器上进行的。用中子束辐照富集的124Xe靶，制备了123Xe样品。对123Xe和123I衰变的全能峰计数率的伽马能谱测量结果显示，123Xe的148.9 keV伽马线的发射强度为48.3(7)%，显著降低了不确定性。与最小二乘拟合方法相比，该方法具有简单、有效的优点。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.