57 research outputs found
In-medium NN cross sections determined from stopping and collective flow in intermediate-energy heavy-ion collisions
In-medium nucleon-nucleon scattering cross sections are explored by comparing
results of quantum molecular dynamics simulations to data on stopping and on
elliptic and directed flow in intermediate-energy heavy-ion collisions. The
comparison points to in-medium cross sections which are suppressed at low
energies but not at higher energies. Positive correlations are found between
the degree of stopping and the magnitudes of elliptic and directed flows.Comment: 11 pages, 4 figures, to be published on PR
Probing the density dependence of the symmetry potential with peripheral heavy-ion collisions
The peripheral heavy-ion collisions of at are studied by means of the Improved Quantum Molecular Dynamics
Model(ImQMD). It is shown that the slope of the average N/Z ratio of emitted
nucleons vs impact parameters for these reactions is very sensitive to the
density dependence of the symmetry energy. Our study also shows that the yields
of and decrease with impact parameters and slope of the yield
of vs impact parameters as well as the ratio of Y()/Y()
depend on the symmetry potential strongly for peripheral heavy-ion collisions.Comment: 10 pages,6 figures, accepted by Phys.Rev.
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