| 放射性束引起的重离子碰撞中敏感于对称能的几个观测量 |
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| 引用本文： | 雍高产,李宝安,左维.放射性束引起的重离子碰撞中敏感于对称能的几个观测量[J].中国物理 B,2005,14(8):1549-1553. |
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| 作者姓名： | 雍高产 李宝安 左维 |
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| 作者单位： | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate School, Chinese Academy of Sciences, Beijing 100039}, China;Department of Chemistry and Physics, Arkansas State University, State University, Arkansas 72467-0419, USA;Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate School, Chinese Academy of Sciences, Beijing 100039}, China |
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| 基金项目： | 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 China (Grant No 10235030), the Key Pre-research Program of the Ministry of Science and Technology of China (Grant No 2002CCB00200), and the K. C. Wong Education Foundation,Hong Kong. Li Bao-An is supported in part by the National
Science Foundation Grants (Grant Nos PHY0243571 and PHY0354572). |
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| 摘 要： | 利用同位旋与动量相关的强子输运模型，我们研究了放射性束引起的中能重离子碰撞中几个观测量的对称能效应。我们发现自由核子发射的非对称度的快度分布，中快度中－质比的横动量分布，的动能分布，以及同位旋相分化（fractionation）的时间演化都敏感于对称能。
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| 关 键 词： | 动量相关 强子输运模型 对称能 |
| 收稿时间： | 2005-01-12 |
| 修稿时间： | 3/3/2005 12:00:00 AM |
Several observables sensitive to the symmetry energy in heavy-ion collisions induced by high energy radioactive beams |
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| Yong Gao-Chan,Li Bao-An and Zuo Wei.Several observables sensitive to the symmetry energy in heavy-ion collisions induced by high energy radioactive beams[J].Chinese Physics B,2005,14(8):1549-1553. |
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| Authors: | Yong Gao-Chan Li Bao-An and Zuo Wei |
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| Institution: | Department of Chemistry and Physics, Arkansas State University, State University, Arkansas 72467-0419, USA; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate School, Chinese Academy of Sciences, Beijing 100039}, China |
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| 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. |
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| Keywords: | momentum dependence hadronic transport model symmetry energy |
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