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.

他的实验博士学位研究项目涉及在RIBF的武士设置的反向运动学中相对论能量的质子富含质子不稳定核的新裂变研究。直到十年前，由于可用实验技术的局限性以及需要使用稳定靶标产生感兴趣的核的需求，裂变研究大多限于接近β稳定性线的核素。随着快速（或加速后）放射性束的出现，这种情况发生了巨大变化，这使裂变研究可以将裂变研究扩展到非常外来的核，以前无法进行裂变实验。这样可以例如研究裂变的几乎没有探索的同胞素（或中子到普罗顿，n/z，比率）的依赖性。该项目在该项目中获得的新的裂变数据针对具有非常异国情调的N/Z值的同位素，将用于至关重要的基准测试和现有理论裂变模型的适用性，并将其可预测性扩展到裂变核的新的但未探索的区域。此外，使用反运动学的使用可以在确定相对论裂变片段的z和a方面获得前所未有的精度（比负责和质量单位的单位和质量单位更好，通常是不可能或在传统裂变研究中受到严重阻碍的，其中裂变片段仅为1 AMEV的低能量。