Effective nucleus-nucleus potentials for heavy-ion fusion reactions  

作　　者：Ning Wang Jin-Ming Chen Min Liu 

机构地区：[1]Present Address:Department of Physics,Guangxi Normal University,Guilin 541004,China [2]Guangxi Key Laboratory of Nuclear Physics and Technology,Guilin 541004,China

出　　处：《Nuclear Science and Techniques》2025年第2期103-111,共9页核技术(英文)

基　　金：supported by the National Natural Science Foundation of China(Nos.12265006,12375129,U1867212);the Innovation Project of Guangxi Graduate Education(No.YCSWYCSW2022176);the Guangxi Natural Science Foundation(2017GXNSFGA198001).

摘　　要：Based on the Skyrme energy density functional and reaction Q-value,this study proposed an effective nucleus-nucleus poten-tial for describing the capture barrier in heavy-ion fusion processes.The 443 extracted barrier heights were well reproduced with a root-mean-square(RMS)error of 1.53 MeV,and the RMS deviations with respect to 144 time-dependent Hartree-Fock capture barrier heights were only 1.05 MeV.Coupled with the Siwek-Wilczyński formula,wherein three parameters were determined by the proposed effective potentials,the measured capture cross sections at energies around the barriers were reasonably well reproduced for several fusion reactions induced by nearly spherical nuclei as well as by nuclei with large deformations,such as^(154)Sm and^(238)U.The shallow capture pockets and small values of the average barrier radii resulted in the reduction of the capture cross sections for 52,54Cr-and 64 Ni-induced reactions,which were related to the synthesis of new super-heavy nuclei.

关 键 词：Nucleus-nucleus potential Fusion reactions Superheavy nuclei Capture cross sections 

分 类 号：O571[理学—粒子物理与原子核物理]