Isospin diffusion in heavy-ion collisions and the neutron skin thickness of lead

Recent analysis of the isospin diffusion data from heavy-ion collisions based on an isospin- and momentum-dependent transport model with in-medium nucleon-nucleon cross sections has led to the extraction of a value of L = 88 ± 25 MeV for the slope of the nuclear symmetry energy at saturation density. This imposes stringent constraints on both the parameters in the Skyrme effective interactions and the neutron skin thickness of heavy nuclei. Among the 21 sets of Skyrme interactions commonly used in nuclear structure studies, the 4 sets SIV, SV, Gσ, and Rσ are found to give L values that are consistent with the extracted one. Further study on the correlations between the thickness of the neutron skin in finite nuclei and the nuclear matter symmetry energy in the Skyrme Hartree-Fock approach leads to predicted thickness of the neutron skin of 0.22 ± 0.04 fm for 208 Pb , 0.29 ± 0.04 fm for 132 Sn , and 0.22 ± 0.04 fm for 124 Sn .

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Neutron skin and centrality classification in high-energy heavy-ion collisions at the LHC

Physics Letters B ◽

10.1016/j.physletb.2015.04.037 ◽

2015 ◽

Vol 745 ◽

pp. 73-78 ◽

Cited By ~ 11

Author(s):

Hannu Paukkunen

Keyword(s):

Heavy Ion Collisions ◽

Heavy Ion ◽

High Energy ◽

Neutron Skin ◽

Ion Collisions

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The symmetry energy: Predictions and constraints

Modern Physics Letters A ◽

10.1142/s0217732317300270 ◽

2017 ◽

Vol 32 (30) ◽

pp. 1730027 ◽

Cited By ~ 2

Author(s):

Francesca Sammarruca

Keyword(s):

Neutron Star ◽

Symmetry Energy ◽

Heavy Ion ◽

Skin Thickness ◽

Neutron Skin ◽

Nuclear Forces ◽

Neutron Skin Thickness ◽

Density Derivative ◽

Proper Consideration ◽

Future Plans

After recalling basic phenomenological features of isospin asymmetric nuclear matter, we review predictions for the interaction part of the symmetry energy obtained from different microscopic approaches. The predictions are compared to updated constraints extracted from heavy-ion (HI) reaction observables of a recent GSI experiment. The discussion is extended to the neutron skin thickness in [Formula: see text] and its relation to the density derivative of the symmetry energy. We underline the importance of giving proper consideration to the theoretical uncertainties of microscopic predictions in order to guide phenomenological analyses. In the end, we report briefly on preliminary neutron star calculations based on chiral nuclear forces and outline future plans.

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DETERMINING THE DENSITY DEPENDENCE OF THE NUCLEAR SYMMETRY ENERGY USING HEAVY-ION REACTIONS

International Journal of Modern Physics E ◽

10.1142/s0218301308010817 ◽

2008 ◽

Vol 17 (09) ◽

pp. 1825-1837 ◽

Cited By ~ 5

Author(s):

LIE-WEN CHEN ◽

CHE MING KO ◽

BAO-AN LI ◽

GAO-CHAN YONG

Keyword(s):

Symmetry Energy ◽

Heavy Ion ◽

High Energy ◽

Skin Thickness ◽

Neutron Skin ◽

Nuclear Symmetry Energy ◽

Heavy Nuclei ◽

Heavy Ion Reactions ◽

Ion Collisions ◽

Density Behavior

We review recent progress in the determination of the subsaturation density behavior of the nuclear symmetry energy from heavy-ion collisions as well as the theoretical progress in probing the high density behavior of the symmetry energy in heavy-ion reactions induced by high energy radioactive beams. We further discuss the implications of these results for the nuclear effective interactions and the neutron skin thickness of heavy nuclei.

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