Determining the Density Content of Symmetry Energy and Neutron Skin: An Empirical Approach

被引：93

作者：

Agrawal, B. K. ^{[1
]}

De, J. N. ^{[1
]}

Samaddar, S. K. ^{[1
]}

机构：

[1] Saha Inst Nucl Phys, Kolkata 700064, India

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 26期

关键词：

NUCLEI; RADII;

D O I：

10.1103/PhysRevLett.109.262501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The density dependence of nuclear symmetry energy remains poorly constrained. Starting from precise empirical values of the nuclear volume and surface symmetry energy coefficients and the nuclear saturation density, we show how in the ambit of microscopic calculations with different energy density functionals, the value of the symmetry energy slope parameter L along with that for neutron skin can be put in tighter bounds. The value of L is found to be L = 64 +/- 5 MeV. For Pb-208, the neutron skin thickness comes out to be 0.188 +/- 0.014 fm. Knowing L, the method can be applied to predict neutron skin thicknesses of other nuclei. DOI: 10.1103/PhysRevLett.109.262501

引用

页数：4

共 38 条

[1] Measurement of the Neutron Radius of 208Pb through Parity Violation in Electron Scattering [J].

Abrahamyan, S. ;

Ahmed, Z. ;

Albataineh, H. ;

Aniol, K. ;

Armstrong, D. S. ;

Armstrong, W. ;

Averett, T. ;

Babineau, B. ;

Barbieri, A. ;

Bellini, V. ;

Beminiwattha, R. ;

Benesch, J. ;

Benmokhtar, F. ;

Bielarski, T. ;

Boeglin, W. ;

Camsonne, A. ;

Canan, M. ;

Carter, P. ;

Cates, G. D. ;

Chen, C. ;

Chen, J-P ;

Hen, O. ;

Cusanno, F. ;

Dalton, M. M. ;

De Leo, R. ;

de Jager, K. ;

Deconinck, W. ;

Decowski, P. ;

Deng, X. ;

Deur, A. ;

Dutta, D. ;

Etile, A. ;

Flay, D. ;

Franklin, G. B. ;

Friend, M. ;

Frullani, S. ;

Fuchey, E. ;

Garibaldi, F. ;

Gasser, E. ;

Gilman, R. ;

Giusa, A. ;

Glamazdin, A. ;

Gomez, J. ;

Grames, J. ;

Gu, C. ;

Hansen, O. ;

Hansknecht, J. ;

Higinbotham, D. W. ;

Holmes, R. S. ;

Holmstrom, T. .

PHYSICAL REVIEW LETTERS, 2012, 108 (11)

[2] Asymmetric nuclear matter and neutron skin in an extended relativistic mean-field model [J].

Agrawal, B. K. .

PHYSICAL REVIEW C, 2010, 81 (03)

[3] Neutron radii in nuclei and the neutron equation of state [J].

Brown, BA .

PHYSICAL REVIEW LETTERS, 2000, 85 (25) :5296-5299

[4] Constraints on the symmetry energy and neutron skins from pygmy resonances in 68Ni and 132Sn [J].

Carbone, Andrea ;

Colo, Gianluca ;

Bracco, Angela ;

Cao, Li-Gang ;

Bortignon, Pier Francesco ;

Camera, Franco ;

Wieland, Oliver .

PHYSICAL REVIEW C, 2010, 81 (04)

[5] Nuclear Symmetry Energy Probed by Neutron Skin Thickness of Nuclei [J].

Centelles, M. ;

Roca-Maza, X. ;

Vinas, X. ;

Warda, M. .

PHYSICAL REVIEW LETTERS, 2009, 102 (12)

[6] Determination of the stiffness of the nuclear symmetry energy from isospin diffusion [J].

Chen, LW ;

Ko, CM ;

Li, BA .

PHYSICAL REVIEW LETTERS, 2005, 94 (03)

[7] Surface symmetry energy [J].

Danielewicz, P .

NUCLEAR PHYSICS A, 2003, 727 (3-4) :233-268

[8] Symmetry energy I: Semi-infinite matter [J].

Danielewicz, Pawel ;

Lee, Jenny .

NUCLEAR PHYSICS A, 2009, 818 (1-2) :36-96

[9] Neutron and proton transverse emission ratio measurements and the density dependence of the asymmetry term of the nuclear equation of state [J].

Famiano, M. A. ;

Liu, T. ;

Lynch, W. G. ;

Mocko, M. ;

Rogers, A. M. ;

Tsang, M. B. ;

Wallace, M. S. ;

Charity, R. J. ;

Komarov, S. ;

Sarantites, D. G. ;

Sobotka, L. G. ;

Verde, G. .

PHYSICAL REVIEW LETTERS, 2006, 97 (05)

[10] Neutron radii in mean-field models [J].

Furnstahl, RJ .

NUCLEAR PHYSICS A, 2002, 706 (1-2) :85-110

← 1 2 3 4 →