报告题目:Generation of angular momenta in fision fragments
报告时间:2026年3月14日星期六14:00
报告地点:物理楼三楼多功能厅
报告人:Dr. Nikolai Antonenko
邀请人:周先荣 教授
报告人单位:俄罗斯杜布纳研究所
报告人简介:
Nikolai Antonenko,俄罗斯杜布纳(Dubna)联合核子研究所教授,博戈留波夫理论物理实验室副主任,德国洪堡学者。1987年毕业于托木斯克理工大学,1991年获物理数学科学博士学位。Scopus Award奖获得者,2019年获Phys. Rev. G杰出评审奖,2022年被评为APS杰出评审人。长期致力于超重核合成、超重核结构、核的结团结构以及多核子转移反应研究。目前,发表著作1部,参与编写教科书3本,在《Phys. Lett. B》、《Phys. Rev. C》等国际顶级期刊发表论文370余篇,引用6200余次,H因子39 。在配合Dubna实验室超重核合成方面取得了重要成果,目前国际上Z=112-118号元素均由Dubna实验室通过“热”熔合反应得到。
报告摘要:
The quantum-mechanical description of the collective angular motion in a system of two touching fission fragments is proposed. The main features of excitation spectrum and the structure of the wave functions are investigated. As found, the angular motion approximately corresponds to independent vibrations of fragments around the pole-to-pole configuration. The model allows us to explain the experimentally observed lack of correlation between the angular momenta of two fission fragments. The correlation between angular momentum and fragment mass is primarily linked to the change of fragments deformation. The saw-tooth behavior of angular momentum distribution with respect to the fragment mass is explained.