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    Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei

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    PhysRevC.82.024321.pdf (1.040Mb)
    Date
    2010
    Author
    Chen, Lie-Wen
    Ko, Che Ming
    Li, Bao-An
    Xu, Jun.
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    Abstract
    Expressing explicitly the parameters of the standard Skyrme interaction in terms of the macroscopic properties of asymmetric nuclear matter, we show in the Skyrme-Hartree-Fock approach that unambiguous correlations exist between observables of finite nuclei and nuclear matter properties. We find that existing data on neutron skin thickness Delta r(np) of Sn isotopes give an important constraint on the symmetry energy E(sym)(rho(0)) and its density slope L at saturation density rho(0). Combining these constraints with those from recent analyses of isospin diffusion and the double neutron/proton ratio in heavy-ion collisions at intermediate energies leads to a more stringent limit on L approximately independent of E(sym)(rho(0)). The implication of these new constraints on the Delta r(np) of (208)Pb as well as the core-crust transition density and pressure in neutron stars is discussed.
    URI
    http://dx.doi.org/10.1103/PhysRevC.82.024321
    https://hdl.handle.net/1969.1/127112
    Description
    Journals published by the American Physical Society can be found at http://publish.aps.org/
    Subject
    EQUATION-OF-STATE
    ISOSPIN PHYSICS
    UNSTABLE NUCLEI
    MATTER
    RADII
    PARAMETRIZATION
    SPIN
    CONSTRAINTS
    PARAMETERS
    EXCITATION
    Physics
    Department
    Physics and Astronomy
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    Citation
    Lie-Wen Chen, Che Ming Ko, Bao-An Li and Jun Xu. Phys.Rev.C 82 024321 2010. "Copyright (2010) by the American Physical Society."

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