Novel fission studies in inverse kinematics with exotic relativistic radioactive beams at SAMURAI

SAMURAI 利用奇异的相对论放射性束进行逆运动学的新颖裂变研究

• 批准号: 2276483
• 金额: --
• 依托单位: University of York
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2276483
• 关键词: Novel; fission; studies; inverse; kinematics

his experimental PhD research project involves the novel fission studies of proton-rich unstable nuclei at relativistic energies in inverse kinematics at the SAMURAI setup at RIBF. Until a decade of so ago, due to the limitations of available experimental techniques and the need to use stable targets to produce nuclei of interest, the fission studies were mostly limited to nuclides close to beta-stability line. The situation changed dramatically with the recent advent of fast (or post-accelerated) radioactive beams, which allow to extend the fission studies to the very exotic nuclei, not previously accessible for fission experiments. This allows to investigate, for example, the scarcely-explored isospin (or, neutron-to-proton, N/Z, ratio) dependence of fission. The new fission data obtained in this project for isotopes with very exotic N/Z-values, will be used for a crucial benchmarking and of the applicability of existing theoretical fission models, and to extend their predictability to new, yet unexplored, regions of fissionning nuclei. Furthermore, the use of inverse kinematics allows to obtain an unprecedented precision in determination of both Z and A of relativistic fission fragments (better than one unit in charge and mass), which is usually not possible or strongly hampered in traditional fission studies, where the fission fragments are at low energy of only 1 AMeV.

他的实验博士研究项目涉及在RIBF的SAMURAI装置上进行的逆运动学相对论能量下富质子不稳定核的新型裂变研究。直到十多年前，由于现有实验技术的限制和需要使用稳定的目标来产生感兴趣的原子核，裂变研究大多局限于接近-稳定线的核素。随着最近快速（或后加速）放射性光束的出现，情况发生了戏剧性的变化，它允许将裂变研究扩展到以前无法进行裂变实验的非常奇特的原子核。这允许研究，例如，很少探索的同位旋（或，中子对质子，N/Z，比率）依赖于裂变。在该项目中获得的具有非常奇异的N/ z值的同位素的新裂变数据将用于现有理论裂变模型的关键基准和适用性，并将其可预测性扩展到新的，尚未探索的裂变核区域。此外，逆运动学的使用允许在确定相对论裂变碎片的Z和A方面获得前所未有的精度（优于一个单位的电荷和质量），这在传统的裂变研究中通常是不可能的或严重阻碍，其中裂变碎片的低能量仅为1 AMeV。