原子核集体激发性质约束对称能的密度依赖性

Density dependence of symmetric energy constrained by collective excitation properties of atomic nuclei

通过实验测得^(90)Zr、^(144)Sm和^(208)Pb的同位旋矢量巨偶极共振能量,^(68)Ni、^(132)Sn的矮共振强度以及其占能量权重求和规则的百分比,^(208)Pb的anti-analog巨偶极共振及同质异位相似态的能量;基于相对论和非相对论平均场理论,采用不同的有效相互作用计算了原子核的集体激发性质,并通过理论结果和实验数据的对比约束对称能的密度依赖性.

The isovector giant dipole resonance energies of ^(90)Zr,^(144)Sm,and ^(208)Pb,the pygmy resonance strengths and their exhausted energy-weighted sum rules of ^(68)Ni and ^(132)Sn,and the anti-analog giant dipole resonance of ^(208)Pb as well as its isobaric analog state have been measured experimentally.The collective excited properties of finite nuclei are calculated in relativistic and non-relativistic mean field methods with different effective interactions.Compared to the experimental data,the density dependence of symmetry energy can be extracted.