Effects of Symmetry Energy in the Reaction 40Ca+124Sn at 140 MeV/nucleon

Details Effects of Symmetry Energy in the Reaction 40Ca+124Sn at 140 MeV/nucleon Effects of Symmetry Energy in the Reaction 40Ca+124Sn at 140 MeV/nucleon

2012-04-16

arxiv.org/abs/1204.3350v1

CHIN. PHYS. LETT. Vol. 29, No. 5 (2012) 052501

Physics

Nuclear Physics

Nuclear Theory

4 pages, 6 figures. arXiv admin note: text overlap with arXiv:1204.0853

Scientific paper

The density-dependent symmetry energy is a hot topic in nuclear physics. Many laboratories over the world are planning to perform related experiments to probe the symmetry energy. Based on the semiclassical Boltzmann-Uehling-Uhlenbeck (BUU) transport model, we study the effects of nuclear symmetry energy in the central reaction 40Ca+124Sn at 140MeV/nucleon in the laboratory system. It is found that the rapidity distribution of free nucleon's neutron-to-proton ratio is sensitive to the symmetry energy, especially at large rapidities. The free neutron-to-proton ratios at small or large rapidities may reflect high or low density behavior of nuclear symmetry energy. To probe the density dependence of nuclear symmetry energy, it is better to give the kinetic distribution and the rapidity distribution of emitted nucleons at the same time.

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