Isospin effects on rotational flow in intermediate energy heavy ion collisions
Abstract
Within the framework of an isospin-dependent quantum molecular dynamics model, the rotational flow in reactions of Fe + Fe and % Ni + Ni at 40 MeV/nucleon for different impact parameters is investigated by analyzing the mid-rapidity azimuthal distribution. The rotational observables are also calculated semiquantitatively. For the first time, it is found that the more neutron-rich system (Fe + Fe) exhibits stronger rotational collective flow. This isospin dependence of rotational collective flow is more appreciable in semi-peripheral collisions and it is shown to mainly result from the isospin dependence of nucleon-nucleon cross section rather than the symmetry energy. Meanwhile, it is indicated that the rotational flow depends strongly on the impact parameter.
Keywords
Cite
@article{arxiv.nucl-th/0011001,
title = {Isospin effects on rotational flow in intermediate energy heavy ion collisions},
author = {Lie-Wen Chen and Feng-Shou Zhang and Zhi-Yuan Zhu},
journal= {arXiv preprint arXiv:nucl-th/0011001},
year = {2009}
}
Comments
4 pages, 4 figures (REVTex)