Giant quadrupole resonances in Pb-208, the nuclear symmetry energy, and the neutron skin thickness
文献类型：期刊论文
| 作者 | Roca-Maza, X.1,2; Brenna, M.1,2; Agrawal, B. K.3; Bortignon, P. F.1,2; Colo, G.1,2; Cao, Li-Gang4 ; Paar, N.5; Vretenar, D.5
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| 刊名 | PHYSICAL REVIEW C
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| 出版日期 | 2013-03-01 |
| 卷号 | 87 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.87.034301 |
| 文献子类 | Article |
| 英文摘要 | Recent improvements in the experimental determination of properties of the isovector giant quadrupole resonance (IVGQR), as demonstrated in the A = 208 mass region, may be instrumental for characterizing the isovector channel of the effective nuclear interaction. We analyze properties of the IVGQR in Pb-208, using both macroscopic and microscopic approaches. The microscopic method is based on families of nonrelativistic and covariant energy density functionals (EDF), characterized by a systematic variation of isoscalar and isovector properties of the corresponding nuclear matter equations of state. The macroscopic approach yields an explicit dependence of the nuclear symmetry energy at some subsaturation density, for instance S(rho = 0.1 fm(-3)), or the neutron skin thickness Delta r(np) of a heavy nucleus, on the excitation energies of isoscalar and isovector GQRs. Using available data it is found that S(rho = 0.1 fm(-3)) = 23.3 +/- 0.6 MeV. Results obtained with the microscopic framework confirm the correlation of the Delta r(np) to the isoscalar and isovector GQR energies, as predicted by the macroscopic model. By exploiting this correlation together with the experimental values for the isoscalar and isovector GQR energies, we estimate Delta r(np) = 0.14 +/- 0.03 fm for Pb-208, and the slope parameter of the symmetry energy: L = 37 +/- 18 MeV. DOI: 10.1103/PhysRevC.87.034301 |
| WOS关键词 | INELASTIC ELECTRON-SCATTERING ; MEAN-FIELD DESCRIPTION ; QUANTUM HADRODYNAMICS ; SPHERICAL NUCLEI ; DENSITY ; EXCHANGE ; MODES ; PARAMETRIZATION ; RADII ; STATE |
| 资助项目 | Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Sciences[KJCX2-EW-N01] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000315734000001 |
| 源URL | [http://119.78.100.186/handle/113462/48025]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Roca-Maza, X. |
| 作者单位 | 1.Univ Milan, Dipartimento Fis, I-20133 Milan, Italy 2.Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy 3.Saha Inst Nucl Phys, Kolkata 700064, India 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 5.Univ Zagreb, Fac Sci, Dept Phys, Zagreb 41000, Croatia |
| 推荐引用方式 GB/T 7714 | Roca-Maza, X.,Brenna, M.,Agrawal, B. K.,et al. Giant quadrupole resonances in Pb-208, the nuclear symmetry energy, and the neutron skin thickness[J]. PHYSICAL REVIEW C,2013,87. |
| APA | Roca-Maza, X..,Brenna, M..,Agrawal, B. K..,Bortignon, P. F..,Colo, G..,...&Vretenar, D..(2013).Giant quadrupole resonances in Pb-208, the nuclear symmetry energy, and the neutron skin thickness.PHYSICAL REVIEW C,87. |
| MLA | Roca-Maza, X.,et al."Giant quadrupole resonances in Pb-208, the nuclear symmetry energy, and the neutron skin thickness".PHYSICAL REVIEW C 87(2013). |
入库方式： OAI收割
来源：近代物理研究所
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