Study of fusion Q-value rule in sub-barrier fusion of heavy ions  

作　　者：刘星星 张高龙 张焕乔 

机构地区：[1]School of Physics and Nuclear Energy Engineering,Beihang University [2]International Research Center for Nuclei and Particles in the Cosmos,Beihang University [3]China Institute of Atomic Energy

出　　处：《Chinese Physics C》2015年第7期19-25,共7页中国物理C（英文版）

基　　金：Supported by National Nature Science Foundation of China(11475013,11035007,11175011);State Key Laboratory of Software Development Environment(SKLSDE-2014ZX-08);Fundamental Research Funds for the Central Universities and the Key Laboratory of High Precision Nuclear Spectroscopy,Institute of Modern Physics,Chinese Academy of Sciences

摘　　要：A vast body of fusion data has been analyzed for different projectiles and target nuclei. It is indicated that the sub-barrier fusion depends on the fusion Q-value. In terms of a recently introduced fusion Q-value rule and an energy scaling reduction procedure, the experimental fusion excitation functions are reduced and compared with each other. It is found that the reduced fusion excitations of selected fusion systems show a similar trend. The fusion data for massive nuclei are in agreement with the Q-value rule. In the fusion process, the Q contribution should be considered. Within this approach, the sub-barrier fusion cross sections of most fusion systems can be predicted without involving any structure effects of colliding nuclei. Instances of disagreement are presented in a few fusion systems. The use of the energy scaling as a criterion of possible experimental data inconsistency is discussed. More precise experimental fusion data need to be measured.A vast body of fusion data has been analyzed for different projectiles and target nuclei. It is indicated that the sub-barrier fusion depends on the fusion Q-value. In terms of a recently introduced fusion Q-value rule and an energy scaling reduction procedure, the experimental fusion excitation functions are reduced and compared with each other. It is found that the reduced fusion excitations of selected fusion systems show a similar trend. The fusion data for massive nuclei are in agreement with the Q-value rule. In the fusion process, the Q contribution should be considered. Within this approach, the sub-barrier fusion cross sections of most fusion systems can be predicted without involving any structure effects of colliding nuclei. Instances of disagreement are presented in a few fusion systems. The use of the energy scaling as a criterion of possible experimental data inconsistency is discussed. More precise experimental fusion data need to be measured.

关 键 词：compound nuclei sub-barrier fusion new energy scaling 

分 类 号：O571[理学—粒子物理与原子核物理]