Experimental investigation of gamma-ray interaction parameters and buildup factors in lanthanide compounds: Insights into penetration depth

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR Applied Radiation and Isotopes Pub Date : 2024-08-03 DOI:10.1016/j.apradiso.2024.111466

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Abstract

This experimental investigation focuses on the gamma-ray interaction parameters and the buildup factor in lanthanide compounds (CeO₂, Ce(SO₄)₂, Dy₂(SO₄)₃, C₃O₉Sm₂, C₃Gd₂O₉, Pr₂O₃). These compounds were exposed to weak radioactive gamma sources with energies of 356, 511, 662, 1173, 1275, and 1332 keV by adopting narrow and broad beam geometry experimental arrangements. The incident and transmitted radiation intensities were measured using a NaI (Tl) detector. Experimentally measured values of mass attenuation coefficient and effective atomic number of lanthanide compounds were found to be in precise agreement with theoretical values obtained from NIST XCOM and Direct-Z_eff database respectively. Additionally, the experimentally determined buildup factor values were compared with energy absorption buildup factor (EABF) and exposure buildup factor (EBF) values obtained from Phy-X/PSD software, providing insights into the gamma-ray penetration depth in terms of mean free path (MFP). At 356 keV, the EABF analysis showed that most compounds had a penetration depth of around 8 mean free paths. In contrast, the EBF analysis indicated penetration depths exceeding 10 mean free paths for all compounds except Ce (SO₄)₂. This new approach holds immense potential for transformative advancements in medical diagnostics, therapy, and the development of innovative technologies in nuclear sciences.

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镧系化合物中伽马射线相互作用参数和积聚因子的实验研究：洞察穿透深度。

这项实验研究的重点是镧系化合物（CeO2、Ce(SO4)2、Dy2(SO4)3、C3O9Sm2、C3Gd2O9、Pr2O3）的伽马射线相互作用参数和堆积因子。采用窄束和宽束几何实验安排，将这些化合物暴露在能量分别为 356、511、662、1173、1275 和 1332 千伏的弱放射性伽马源中。入射和透射辐射强度是用 NaI (Tl) 探测器测量的。实验测得的镧系元素质量衰减系数和有效原子序数与分别从 NIST XCOM 和 Direct-Zeff 数据库中获得的理论值精确一致。此外，还将实验测定的堆积因子值与从 Phy-X/PSD 软件获得的能量吸收堆积因子（EABF）和暴露堆积因子（EBF）值进行了比较，以平均自由路径（MFP）的形式深入了解了伽马射线的穿透深度。EABF 分析表明，在 356 千伏时，大多数化合物的穿透深度约为 8 个平均自由路径。相反，EBF 分析表明，除 Ce (SO4)2 外，所有化合物的穿透深度都超过了 10 个平均自由路径。这种新方法为医学诊断、治疗和核科学创新技术的发展带来了巨大的变革潜力。

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.