发表机构
University of Sciences and Technology Houari Boumediene (USTHB); Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM); iThemba LABS; CRNA; University M’Hamed Bougara; Department of Physics, University of the Western Cape; Institut de Physique Nucléaire (IPN); Department of Physics, Stellenbosch University; Department of Physics, University of Zululand; Department of Physics and Engineering University of Zululand; Department of Physics, University of Cape Town（哈立迪·布迈丁科技大学; 核科学与物质科学中心; iThemba实验室; 阿尔及利亚核研究与应用研究中心; 穆罕默德·布格拉大学; 西开普大学物理系; 核物理研究所; 斯坦伦布什大学物理系; 祖鲁兰大学物理系; 祖鲁兰大学物理与工程系; 开普敦大学物理系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
测量了66-125 MeV质子与natMg、natSi和56Fe靶反应产生的伽马射线截面，通过改进光学模型势和形变参数提高了理论与实验的一致性，并讨论了天体物理应用。
AI 中文摘要
我们测量了高能质子束与天体物理场所中丰富的各种靶核相互作用的核伽马射线产生截面。实验在iThemba LABS（南非开普敦附近）的200-MV分离扇区回旋加速器（SSC）上进行，使用高能量分辨率和高效探测系统记录发射的伽马射线光子。本文报告并讨论了在入射能量为Ep = 66、80、95、110和125 MeV的质子束轰击natMg、natSi和56Fe靶时产生的各种伽马射线线的实验数据集。在描述实验装置和使用的数据分析方法后，我们报告并讨论了总实验截面结果，并与文献中的先前对应结果、半经验汇编以及通过TALYS代码计算进行的核反应理论预测进行了比较。当使用我们修改的光学模型势和Bêta (lambda)能级形变参数代替TALYS中内置的默认输入参数时，理论与实验之间的一致性显著改善。最后，我们展望了我们的结果在核物理和天体物理学中的应用，并得出了相关结论。
英文摘要
We have measured nuclear gamma-ray line production cross sections in interactions of highly accelerated proton beams with various target nuclei abundant in astrophysical sites. The experiments were carried out at the 200-MV Separated Sector Cyclotron (SSC) of iThemba LABS (near Cape Town, in South Africa) using a high-energy resolution and high efficiency detection system for registering the emitted gamma-ray photons. We report and discuss in this paper the collected experimental data sets for various gamma-ray lines produced in bombarding natMg, natSi and 56Fe targets with proton beams of incident energies of Ep = 66, 80, 95, 110 and 125 MeV. After describing the experimental set up and the data analysis method used, we report and discuss our total experimental cross section results in comparisons to previous counterparts from the literature, to a semi-empirical compilation and to the predictions of nuclear reaction theory via performed TALYS code calculations. Significantly improved agreements between theory and experiment are point out when using our modified optical model potential and Bêta (lambda) level deformation parameters instead of the default input parameters built in TALYS. Finally, we put into perspective the applications of our results in nuclear physics and astrophysics with drawing relevant conclusions. gammaKeywords: Proton-induced nuclear reactions; gamma-ray production cross sections; gamma-ray spectrometry; gamma-ray spectroscopy; Astrophysical implications
Comments55 pages, 12 figures, 12 tables
