Study on the formation of the composite system of 238U+238U
Strongly damped reactions of 238U+238U, at Ecm=680-1880 MeV have been studied based on the improved quantum molecular dynamics model. We find that at a certain energy region the entrance channel potential is weakly repulsive and the dissipation is very strong after touching configuration, these two effects make the time delay of re-separation for colliding system. The single particle potential well of the transiently formed composite system has Coulomb barrier about 15-20 MeV high at the surface, which makes the excited unbound protons being still embedded in the potential well and moving in a common mono-single particle potential for a period of time and thus restrains from quick decay of the composite system.
ImQMD model, strongly damped reaction, dissipation
WU Xi-Zhen TIAN Jun-Long ZHAO Kai ZHANG Ying-Xun LI Zhu-Xia
China Institute of Atomic Energy, P.O.Box 27518, Beijing 102413, China Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China;Beijing Ra China Institute of Atomic Energy, P.O.Box 27518, Beijing 102413, China;Institute of Theoretical Phys
国际会议
重庆
英文
30-32
2008-05-10（万方平台首次上网日期，不代表论文的发表时间）