Shape Evolution of the Compound Nucleus in the Superheavy Element Synthesis Reaction via the BUU Model  

作　　者：韦靓 刘玉鑫 

机构地区：[1]Department of Physics, Peking University, Beijing 100871 [2]Key Laboratory of Heavy Ion Physics, Ministry of Education, Beijing 100871 [3]Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 [4]Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000

出　　处：《Chinese Physics Letters》2005年第9期2222-2225,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10425521, 10075002, and 10135030, the Major State Basic Research Development Programme under Grant No G2000077400, and Doctoral Program Foundation of the Ministry of Education of China under Grant No 20040001010, the Foundation for University Key Teacher by the Ministry of Education of China.

摘　　要：By taking the BUU model, we simulate the superheavy element synthesis reaction. With the rotation effect being included in the BUU model, the effect of the non-centrality of the reaction ^48Ca＋^238U→^286 112 is studied. It is shown that the promising impact parameter in the synthesis process can be released from zero to a value little smaller than the radius of the smaller nucleus involved in the reaction. Meanwhile, the compound nucleus may involve rich shape phases.By taking the BUU model, we simulate the superheavy element synthesis reaction. With the rotation effect being included in the BUU model, the effect of the non-centrality of the reaction ^48Ca＋^238U→^286 112 is studied. It is shown that the promising impact parameter in the synthesis process can be released from zero to a value little smaller than the radius of the smaller nucleus involved in the reaction. Meanwhile, the compound nucleus may involve rich shape phases.

关 键 词：HEAVY-ION COLLISIONS REACTION CROSS-SECTION COLD-FUSION REACTIONS SURVIVAL PROBABILITY DYNAMICAL MODEL QUASI-FISSION ENERGY COMPETITION DECAY 

分 类 号：O571[理学—粒子物理与原子核物理]