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Isospin effects on squeeze-out flow in heavy-ion collisions |
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| Authors: | Feng-Shou Zhang Lie-Wen Chen Wen-Fei Li Zhi-Yuan Zhu |
| Institution: | (1) Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China, CN;(2) Institute of Modern Physics, Academia Sinica, P.O. Box 31, Lanzhou 730000, China, CN;(3) Shanghai Institute of Nuclear Research, Academia Sinica, Shanghai 201800, China, CN;(4) CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China, CN |
| Abstract: | The squeeze-out flow in reactions of 124Sn + 124Sn and 124Ba + 124Ba at different incident energies for different impact parameters is investigated by means of an isospin-dependent quantum molecular dynamics model. For the first time, it is found that the more neutron-rich system (124Sn + 124Sn) exhibits weaker squeeze-out flow. This isospin dependence of the squeeze-out flow is shown to mainly result from the isospin dependence of nucleon-nucleon cross-section and the symmetry energy. Received: 14 March 2000 / Accepted: 29 September 2000 |
| Keywords: | PACS 25 70 -z Low and intermediate energy heavy-ion collisions – 25 75 Ld Collective flow |
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