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Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208
Cao, LG; Roca-Maza, X; Colo, G; Sagawa, H; Cao, LG (reprint author), North China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R China.
2015
发表期刊PHYSICAL REVIEW C
卷号92期号:3页码:34308
文章类型Article
摘要We investigate the impact of the neutron skin thickness, Delta R-np, on the energy difference between the anti-analog giant dipole resonance (AGDR), E-AGDR, and the isobaric analog state (IAS), E-IAS, in a heavy nucleus such as Pb-208. For guidance, we first develop a simple and analytic, yet physical, approach based on the droplet model that linearly connects the energy difference E-AGDR - E-IAS with Delta R-np. To test this correlation on more fundamental grounds, we employ a family of systematically varied Skyrme energy density functionals where variations on the value of the symmetry energy at saturation density J are explored. The calculations have been performed within the fully self-consistent Hartree-Fock (HF) plus charge-exchange random phase approximation (RPA) framework. We confirm the linear correlation within our microscopic approach and we can compare our results with available experimental data in Pb-208 in order to extract a preferred value for Delta R-np and, in turn, for the symmetry energy parameters. Averaging the results from two available experimental data, our analysis gives Delta R-np = 0.236 +/- 0.018 fm, J = 33.2 +/- 1.0 MeV, and a slope parameter of the symmetry energy at saturation L = 97.3 +/- 11.2 MeV. The errors include the experimental uncertainties and a lower-limit estimate of model uncertainties. These results are consistent with those extracted from different experimental data albeit L and Delta R-np are somewhat large when compared to previous estimations based on giant resonance studies. Possible hints whether model dependence can explain this difference are provided.
学科领域Physics
资助者National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241]
DOIhttp://dx.doi.org/10.1103/PhysRevC.92.034308
关键词[WOS]HEAVY-ION COLLISIONS ; DENSE MATTER ; NUCLEI ; ISOTOPES ; EXCITATION ; EQUATION ; RADII ; STARS ; STATE
收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; National Natural Science Foundation of China [11175216, 11575060, 11435014] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241] ; Fundamental Research Funds for the Central Universities [JB2014241]
WOS类目Physics, Nuclear
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/20863
专题理论物理所SCI论文
通讯作者Cao, LG (reprint author), North China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R China.
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Cao, LG,Roca-Maza, X,Colo, G,et al. Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208[J]. PHYSICAL REVIEW C,2015,92(3):34308.
APA Cao, LG,Roca-Maza, X,Colo, G,Sagawa, H,&Cao, LG .(2015).Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208.PHYSICAL REVIEW C,92(3),34308.
MLA Cao, LG,et al."Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208".PHYSICAL REVIEW C 92.3(2015):34308.
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