Effect of the momentum dependence of nuclear symmetry potential on the transverse and elliptic flows

Details Effect of the momentum dependence of nuclear symmetry potential on the transverse and elliptic flows Effect of the momentum dependence of nuclear symmetry potential on the transverse and elliptic flows

2012-03-08

arxiv.org/abs/1203.1724v1

Eur.Phys.J. A48 (2012) 30

Physics

Nuclear Physics

Nuclear Theory

6 pages, 6 figures, to be published by EPJA

Scientific paper

In the framework of the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model, effect of the momentum dependence of nuclear symmetry potential on nuclear transverse and elliptic flows in the neutron-rich reaction $^{132}$Sn+$^{124}$Sn at a beam energy of 400 MeV/nucleon is studied. We find that the momentum dependence of nuclear symmetry potential affects the rapidity distribution of the free neutron to proton ratio, the neutron and the proton transverse flows as a function of rapidity. The momentum dependence of nuclear symmetry potential affects the neutron-proton differential transverse flow more evidently than the difference of neutron and proton transverse flows as well as the difference of proton and neutron elliptic flows. It is thus better to probe the symmetry energy by using the difference of neutron and proton flows since the momentum dependence of nuclear symmetry potential is still an open question. And it is better to probe the momentum dependence of nuclear symmetry potential by using the neutron-proton differential transverse flow and the rapidity distribution of the free neutron to proton ratio.

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