Angular momentum dependence of quasifission dynamics in the reaction ^(48)Ca+^(244)Pu  

作　　者：Chong Yu Lu Guo 

机构地区：[1]School of Physics, University of Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2017年第9期22-27,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants Nos.11175252,and 11575189);Presidential Fund of University of Chinese Academy of Sciences;the Natural Science Foundation of China-Japan Society for the Promotion of Science International Cooperation and Exchange Program(Grant No.11711540016)

摘　　要：The quasifission dynamics in the reaction ^(48)Ca+^(244)Pu is investigated in the framework of time-dependent Hartree-Fock(TDHF)theory. The calculations are performed in three-dimensional Cartesian coordinate without any symmetry restrictions. The full Skyrme energy functional is incorporated in our TDHF implementation. The quasifission dynamics is quite sensitive to the angular momentum of colliding system. The contact time of quasifission decreases as a function of angular momentum and then forms a plateau with small oscillations. The quasifission process is accompanied by an important multi-nucleon transfer. The quantum shell effect plays a crucial role in the mass and charge of quasifission fragments. The mass-angle distribution of the fragments is calculated, which can be compared directly with future experiments.The quasifission dynamics in the reaction 48Ca＋244pu is investigated in the framework of time-dependent Hartree-Fock （TDHF） theory. The calculations are performed in three-dimensional Cartesian coordinate without any symmetry restrictions. The full Skyrme energy functional is incorporated in our TDHF implementation. The quasifission dynamics is quite sensitive to the angular momentum of colliding system. The contact time of quasifission decreases as a function of angular momentum and then forms a plateau with small oscillations. The quasifission process is accompanied by an important multi-nucleon transfer. The quantum shell effect plays a crucial role in the mass and charge of quasifission fragments. The mass-angle distribution of the fragments is calculated, which can be compared directly with future experiments.

关 键 词：QUASIFISSION superheavy element time-dependent Hartree-Fock （TDHF） 

分 类 号：O571[理学—粒子物理与原子核物理]