论文标题
基于动态传输模型，重离子碰撞的重离子碰撞的一般混沌行为
General Chaotic Behaviors of Heavy ion Collisions at Intermediate Energy Based on Dynamical Transport Model
论文作者
论文摘要
我们的动机探索了多裂片相变的动力学机制，并扩展了我们对非线性动态过程中确定性混乱的知识，我们系统地研究了中间能量中重离子碰撞的非线性动力学行为。为了强调碰撞动力学的一般特征，在本文中，我们模拟了一个简单的碰撞系统，$ CA+CA $，并在反应过程中的典型非线性特征数量（如广义熵的产生和半经典相空间的分形结构）的表现。还评估了反应最终状态下碎片质量分布的多碎片熵，信息维度和动力学波动。我们关于中间过程和反应的最终产物的结果是相互验证的，因此在中间能量的重离子碰撞中，强烈确认非线性混乱存在。同时，我们发现在入射能的附近$ e = 100 meV $的最终产生中获得的临界相变的典型特征相对清楚。
Motivated to explore the dynamical mechanism of multi-fragmentation phase transition and expand our knowledge on the deterministic chaos in nonlinear dynamic process, we study systematically the nonlinear dynamical behaviors of heavy ion collisions at intermediate energy. In order to highlight the general characteristics of the collision dynamics, in the present paper, we simulate a simple collision system, $Ca+Ca$, and obverse the performances of the typical nonlinear characteristic quantities such as the production of generalized entropy and the fractal structure of the semiclassical phase space during the reaction process. The multifragmentation entropy, information dimension and the dynamical fluctuations of fragment mass distribution in the final state of the reaction are also evaluated. Our results about the intermediate processes and the final products of the reaction are verified mutually so that confirm strongly the existence of nonlinear chaos in the heavy ion collisions at intermediate energy. Meanwhile, we find that the typical characteristics of the critical phase transition obtained in the analysis of the final production of the reaction are relatively more clear in the vicinity of the incident energies $E=100 MeV$.
