scholarly journals CONSTRAINING THE SKYRME EFFECTIVE INTERACTIONS AND THE NEUTRON SKIN THICKNESS OF NUCLEI USING ISOSPIN DIFFUSION DATA FROM HEAVY ION COLLISIONS

2006 ◽  
Vol 15 (07) ◽  
pp. 1385-1395 ◽  
Author(s):  
LIE-WEN CHEN ◽  
CHE MING KO ◽  
BAO-AN LI
Keyword(s):  
Symmetry Energy ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Recent Analysis ◽  
Skin Thickness ◽  
Neutron Skin ◽  
Effective Interactions ◽  
Diffusion Data ◽  
Ion Collisions ◽  
Neutron Skin Thickness

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 .

The symmetry energy: Predictions and constraints

2017 ◽  
Vol 32 (30) ◽  
pp. 1730027 ◽  
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.

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

2008 ◽  
Vol 17 (09) ◽  
pp. 1825-1837 ◽  
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.

scholarly journals Symmetry energy dependence of light fragment production in heavy-ion collisions

2015 ◽  
Vol 88 ◽  
pp. 00021
Author(s):  
H. H. Wolter ◽  
M. Zielinska-Pfabe ◽  
P. Decowski ◽  
M. Colonna
Keyword(s):  
Energy Dependence ◽  
Symmetry Energy ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Light Fragment ◽  
Ion Collisions ◽  
Fragment Production

Effects of pairing correlations on the neutron skin thickness and the symmetry energy

2017 ◽  
Vol 96 (2) ◽  
Author(s):  
Soonchul Choi ◽  
Ying Zhang ◽  
Myung-Ki Cheoun ◽  
Youngshin Kwon ◽  
Kyungsik Kim ◽  
...  
Keyword(s):  
Symmetry Energy ◽  
Skin Thickness ◽  
Neutron Skin ◽  
Neutron Skin Thickness ◽  
Pairing Correlations

scholarly journals Constraints on EOS from finite nuclei, heavy ion collisions and neutron stars

2020 ◽  
Vol 15 ◽  
pp. 196
Author(s):  
T. Gaitanos ◽  
G. Ferini ◽  
M. Colonna ◽  
M. Di Toro ◽  
G. A. Lalazissis ◽  
...  
Keyword(s):  
Equation Of State ◽  
Neutron Stars ◽  
Symmetry Energy ◽  
Ground State ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Intermediate Energy ◽  
Ion Collisions ◽  
Finite Nuclei ◽  
Asymmetric Matter

We present several possibilities offered by nuclear structure, the dynamics of intermediate energy heavy ion collisions and neutron stars to investigate the nuclear matter equation of state (EoS) beyond the ground state. In particular the high density nuclear EoS of asymmetric matter, i.e. the symmetry energy, is discussed.

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