Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208
文献类型：期刊论文
| 作者 | Cao, Li-Gang1,2,3,4 ; Roca-Maza, X.5,6; Colo, G.3,5,6; Sagawa, H.3,7,8
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| 刊名 | PHYSICAL REVIEW C
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| 出版日期 | 2015-09-10 |
| 卷号 | 92页码:10 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.92.034308 |
| 英文摘要 | 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. |
| WOS关键词 | HEAVY-ION COLLISIONS ; DENSE MATTER ; NUCLEI ; ISOTOPES ; EXCITATION ; EQUATION ; RADII ; STARS ; STATE |
| 资助项目 | National Natural Science Foundation of China[11175216] ; National Natural Science Foundation of China[11575060] ; National Natural Science Foundation of China[11435014] ; Fundamental Research Funds for the Central Universities[JB2014241] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000360963000002 |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://119.78.100.186/handle/113462/40614]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Cao, Li-Gang |
| 作者单位 | 1.North China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China 4.Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China 5.Univ Milan, Dipartimento Fis, I-20133 Milan, Italy 6.Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy 7.Univ Aizu, Ctr Math & Phys, Fukushima 9658580, Japan 8.RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan |
| 推荐引用方式 GB/T 7714 | Cao, Li-Gang,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,2015,92:10. |
| APA | Cao, Li-Gang,Roca-Maza, X.,Colo, G.,&Sagawa, H..(2015).Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208.PHYSICAL REVIEW C,92,10. |
| MLA | Cao, Li-Gang,et al."Constraints on the neutron skin and symmetry energy from the anti-analog giant dipole resonance in Pb-208".PHYSICAL REVIEW C 92(2015):10. |
入库方式： OAI收割
来源：近代物理研究所
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