摘要
用能量密度公式及小液滴模型给出的费米密度分布,并引入中子皮及中子分布弥散度随中子过剩自由度增加而增加这一因素,计算了重离子反应相互作用势及熔合位垒。熔合位垒的计算值和实验值符合很好,特别是在中重核区域,改善了以前的计算结果。详细研究了亲近势标度,发现用中子皮及中子分布弥散度的变化能较好地解释中子过剩自由度对亲近势标度偏离的影响。
The interaction potentials between two heavy ions are calculated by using the energy density formalism and the nuclear Fermi density distributions, the factor of the neutron skin and the surface diffusion of the neutron distribution increasing with the increases of the neutron excess is considered. In this calculation, the experimental fusion barriers are well reproduced, and improved for the intermediate heavier nuclear systems. It is found that the neutron skin and the neutron distribution diffusion can explam the influence of the neutron excess degree of freedom on the proximity scaling.
出处
《高能物理与核物理》
CSCD
北大核心
1991年第11期1025-1032,共8页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
