The influence of cluster emission and the symmetry energy on neutron-proton spectral double ratios

Details The influence of cluster emission and the symmetry energy on neutron-proton spectral double ratios The influence of cluster emission and the symmetry energy on neutron-proton spectral double ratios

2007-08-27

arxiv.org/abs/0708.3684v2

Physics

Nuclear Physics

Nuclear Theory

11 pages, 4 figures

Scientific paper

10.1016/j.physletb.2008.03.075

Emissions of free neutrons and protons from the central collisions of 124Sn+124Sn and 112Sn+112Sn reactions are simulated using the Improved Quantum Molecular Dynamics model with two different density dependence of the symmetry energy in the nuclear equation of state. The constructed double ratios of the neutron to proton ratios of the two reaction systems are found to be sensitive to the symmetry terms in the EOS. The effect of cluster formation is examined and found to affect the double ratios mainly in the low energy region. In order to extract better information on symmetry energy with transport models, it is therefore important to have accurate data in the high energy region which also is affected minimally by sequential decays.

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