利用轫致辐射优化同位素生产的分析方法

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

Applied Radiation and Isotopes Pub Date : 2024-10-09 DOI:10.1016/j.apradiso.2024.111547

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引用次数: 0

摘要

根据对轫致辐射（X 射线）产生同位素的分析描述，提出了一种算法，用于计算与轫致辐射转换器保持一定距离的给定质量圆柱形靶的最佳尺寸，以确保同位素产品的最大产量。推导出了总活度及其沿靶轴分布的表达式。提出了一种γ谱测量厚生产靶活度的技术。在质量为 10-100g 的天然钼靶中诱发的 100Mo(γ,n)99Mo反应验证了这种新方法，X 射线光子的端点能量为 40 MeV。分析预测结果与蒙特卡洛模拟和实验结果十分吻合。

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An analytical approach to optimization of isotope production by bremsstrahlung radiation

Based on analytical description of isotope production by bremsstrahlung (X-ray) radiation, an algorithm is proposed for calculating the optimal dimensions of a cylindrical target of given mass positioned at a given distance from a bremsstrahlung converter to ensure the maximum yield of the isotope product. The expressions are derived for the total activity and its distribution along the target axis. A technique of γ-spectrometric measuring the activity of a thick production target is proposed. The novel approach is validated by the ¹⁰⁰Mo(γ,n)⁹⁹Mo reaction induced in a natural molybdenum target by mass in the range 10–100g with the X-ray photons at an end-point energy of 40 MeV. The analytical predictions are in good agreement with the results of Monte-Carlo simulations and experiment.

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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.