摘要
实验证实,用重离子碰撞合成超重原子核时,准裂变对熔合的抑制是非常重要的.碰撞中双核系统间核子转移所形成的势能面称之为驱动势,它制约核子转移,因而决定熔合与准裂变的竞争.双核系统势能面还提供重离子碰撞合成超重原子核的最佳激发能和最佳弹靶组合的信息.
The experimental measurements have provided the evidence that the suppression of fusion cross-section caused by quasi-fission is very important for the synthesis of super-heavy nuclei by heavy ion collisions. The potential energy surface due to the nucleon transfer in the collision process is the driven potential, which governs the nucleon transfer, so that governs the competition between the fusion and quasi-fission. The dinuclear system potential energy surface also gives the information about the optimum projectile-target combination, as well as the optimum excitation energy for the synthesis of super-heavy nuclei by heavy ion collisions.
出处
《高能物理与核物理》
CSCD
北大核心
2003年第1期48-52,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10175082)
中国科学院知识创新工程重点方向性项目(KJCX2-SW-NO2)
中国科学院百人计划经费
国家重点基础研究发展规划项目(G2000077400)
科技部基础研究重大项目前期研究专项基金资助
