Symmetry energy for fragmentation in dynamical nuclear collisions
نویسندگان
چکیده
منابع مشابه
Symmetry energy for fragmentation in dynamical nuclear collisions
We extract values for the free symmetry energy as a function of the fragment size (the proton number Z) from antisymmetrized molecular dynamics (AMD) calculations of calcium collisions. Simple statistical physics describe well the distribution of hot nuclei at breakup, provided the surface symmetry term in the free energy is much smaller at high excitation than in ground state nuclei. This resu...
متن کاملFluctuations and symmetry energy in nuclear fragmentation dynamics.
Within a dynamical description of nuclear fragmentation, based on the liquid-gas phase transition scenario, we explore the relation between neutron-proton density fluctuations and nuclear symmetry energy. We show that, along the fragmentation path, isovector fluctuations follow the evolution of the local density and approach an equilibrium value connected to the local symmetry energy. Higher-de...
متن کاملHigh Energy Nuclear Collisions
Highlights of the results from ultrarelativistic heavy ion collisions at CERN-SPS are reviewed. In particular, I discuss how the experimental results indicate that a collective strongly interacting system has been produced, and what are the implications towards the Quark Gluon Plasma. The physical ideas behind measuring certain observables are introduced. The future program of high energy nucle...
متن کاملSymmetry energy determination in heavy ion collisions
BEL~M(A,Z) = a,A asA2’3aJ2/A”3 + a,A“‘* asym (N-Z)2/A (1) where N, Z and A are the neutron, proton and mass numbers; a,, a, and a, are the volume, surface and Coulomb terms in the liquid drop model. aPA-“* is the pairing energy. The last term in Eq. (l), asym (N-Z)‘/A, accounts for the symmetry energy which favors nuclei with equal number of protons and neutrons. In most parametrizations, asym ...
متن کاملProbing the high density behavior of the nuclear symmetry energy with high energy heavy-ion collisions.
High energy heavy-ion collisions are proposed as a novel means to constrain stringently the high density (HD) behavior of nuclear symmetry energy. Within an isospin-dependent hadronic transport model, it is shown for the first time that the isospin asymmetry of the HD nuclear matter formed in high energy heavy-ion collisions is uniquely determined by the HD behavior of the nuclear symmetry ener...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2004
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.70.041604