Several observables sensitive to the symmetry energy in heavy-ion collisions induced by high energy radioactive beams
Yong Gao-Chan (雍高产)ab, Li Bao-An (李宝安)c, Zuo Wei (左维)ab
a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; b Graduate School, Chinese Academy of Sciences, Beijing 100039, Chinab Department of Chemistry and Physics, Arkansas State University, State University, Arkansas 72467-0419, USA
Abstract Using an isospin- and momentum-dependent hadronic transport model,effects of the symmetry energy on several observables in heavy-ion collisions induced by radioactive beams at intermediate energies are studied. It is found that rapidity distribution of the isospin asymmetry of nucleon emissions, transverse momentum distribution of the ratio of free neutrons to protons at mid-rapidity, kinetic energy distribution of the ratio of $\pi^{-}/\pi^{+}$ as well as evolution of the isospin fractionation are all sensitive to the symmetry energy.
Received: 12 January 2005
Revised: 03 March 2005
Accepted manuscript online:
Fund: Project supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No
KJCX2-SW-N02), the\linebreak State Key Development Program of Basic Research of China (Grant No G2000077400), the National Natural Science Foundation of
Cite this article:
Yong Gao-Chan (雍高产), Li Bao-An (李宝安), Zuo Wei (左维) Several observables sensitive to the symmetry energy in heavy-ion collisions induced by high energy radioactive beams 2005 Chinese Physics 14 1549
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