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

作　　者：曹李刚 程诗慧 温静 CAO Ligang;CHENG Shihui;WEN Jing(The Key Laboratory of Beam Technology of the Ministry of Education,College of Nuclear Science and Technology,Beijing Normal University,100875,Beijing,China)

机构地区：[1]北京师范大学核科学与技术学院,教育部射线束技术重点实验室,北京100875

出　　处：《北京师范大学学报（自然科学版）》2022年第5期697-702,共6页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11975096);中央高校基本科研业务费专项资金资助项目(2020NTST06)。

摘　　要：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.

关 键 词：对称能 同位旋矢量集体激发 中子皮 平均场理论 

分 类 号：O571[理学—粒子物理与原子核物理]