Half-life determination of 72Ga

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2024-09-10 DOI:10.1016/j.apradiso.2024.111517

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引用次数: 0

Abstract

Gallium-72 is an important Comprehensive Nuclear-Test-Ban Treaty relevant radionuclide that arouses significant interest. However, the reported half-lives of ⁷²Ga are discrepant. In the current work, three solution samples of different concentrations were prepared and sequentially measured by a high-purity Germanium (HPGe) spectrometer. The count rates as a function of time of the 834.1 keV and 630.0 keV γ-lines were followed for the half-life determination. Through mass normalization, the datasets of three samples are combined and the statistical uncertainties are reduced. Half-life values were derived from datasets of each sample and mass normalization and corresponding complete uncertainty budgets are presented. The final half-life determined for ⁷²Ga is 13.94 (2) h, showing a deviation of 1.12% from the last nuclear data sheets (NDS) recommended value. Comparing with the values of previous publications, the result from this work is smaller than most results and consistent with the latest value which has one large uncertainty. A recommended value of 14.07 (3) h is estimated using the power-moderated mean (PMM) method.

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72Ga 的半衰期测定

镓-72 是一种与《全面禁止核试验条约》相关的重要放射性核素，引起了人们的极大兴趣。然而，报告的 72Ga 半衰期并不一致。在本次研究中，我们制备了三种不同浓度的溶液样品，并利用高纯锗（HPGe）光谱仪对其进行了连续测量。在测定半衰期时，对 834.1 千伏和 630.0 千伏 γ 线的计数率随时间的变化进行了跟踪。通过质量归一化，三个样本的数据集被合并在一起，从而减少了统计不确定性。根据每个样品的数据集和质量归一化得出半衰期值，并给出了相应的完整不确定性预算。72Ga 的最终半衰期为 13.94 (2) h，与最新的核数据表（NDS）推荐值相差 1.12%。与以前发表的数值相比，这项工作的结果比大多数结果都要小，并且与最新数值一致，而最新数值有很大的不确定性。使用功率调制平均法（PMM）估算出的建议值为 14.07 (3) h。

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

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. 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. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.