Study of 3He-induced reactions and elastic scattering on light isotopes: Measurement, benchmarking and theoretical investigation of differential cross sections suitable for Ion Beam Analysis.

3He 诱导反应和轻同位素弹性散射的研究：适用于离子束分析的微分截面的测量、基准测试和理论研究。

• 批准号: 465963898
• 负责人: Dr. Varvara Foteinou, Ph.D.
• 金额: --
• 依托单位: RUBION, Zentrale Einrichtung für Ionenstrahlen und Radionuklide
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/465963898?language=en
• 关键词: Study; 3He; induced; reactions; elastic

The present proposal aims at providing an important contribution in the field of Ion Beam Analysis via the measurement of differential cross sections of 3He-induced reactions and elastic scattering, suitable for the application of the NRA and EBS techniques for the depth-profiling of light isotopes. Material analysis with 3He as the probing beam presents the distinct advantage of causing the simultaneous excitation of most light isotopes with enhanced sensitivity and accuracy, mainly due to the relatively high differential cross sections and Q-values involved, while at the same time, there is no need for special radiation safety precautions, as in the case of deuteron-induced reactions where certain precautions are indispensable due to the neutrons emitted from various reaction channels and/or the deuteron breakup. The principal objectives of this study will be: (a) The measurement, with the highest possible precision, of the differential cross sections of a number of 3He-induced reactions and elastic scattering on light isotopes, at suitable (low) energies and at multiple backward angles, (b) the subsequent benchmarking of the obtained results using high-purity, isotopically-enriched thick targets of accurately known composition and (c) the interpretation of the experimental data in the framework of the R–matrix theory, along with DWBA calculations.

本提案旨在通过测量3 He诱导反应和弹性散射的微分截面，为轻同位素深度剖面的NRA和EBS技术的应用提供离子束分析领域的重要贡献。用3 He作为探测束进行材料分析具有明显的优点，即可以同时激发大多数轻同位素，提高灵敏度和准确度，这主要是由于所涉及的微分截面和Q值相对较高，同时不需要特殊的辐射安全预防措施，如在氘核诱发反应的情况下，其中由于从各种反应通道发射的中子和/或氘核分裂，某些预防措施是必不可少的。本研究的主要目的是：（a）以尽可能高的精度，在适当的（低）能量和多个后向角下，测量轻同位素上的一些3 He诱导反应和弹性散射的微分截面，（B）随后使用高纯度的同位素富集的厚靶的准确已知的组成和（c）的R-矩阵理论的框架内的实验数据的解释，沿着与DWBA计算。