Angular-momentum-driven chaos in small clusters
Angular-momentum-driven chaos in small clusters
复制标题
小团簇中角动量驱动的混沌
DOI：
10.1103/physreva.58.377
复制
发表时间：
1998
影响因子：
2.9
通讯作者：
E. Yurtsever
中科院分区：
文献类型：
--
作者：
E. Yurtsever
研究了旋转运动对三原子Lennard-Jones团簇混沌行为的影响。一组初始动量分布与可调参数被选择来对应于各种刚体旋转对称轴的集群。通过平滑地改变初始反冲的方向，得到了规则和混沌状态之间的周期性转变。导致这种转变的初始条件的研究表明，决定混沌行为的程度的主要因素是旋转和振动运动之间的动能的初始分配。从各种性质的时间演化的分析得出结论，这种初始分配的基本作用是控制动能和势能之间的能量转移。
The effects of the rotational motion on the chaotic behavior of triatomic Lennard-Jones clusters are studied. A set of initial momentum distributions with tunable parameters is chosen to correspond to various rigid-body rotations around symmetry axes of the cluster. By smoothly varying the direction of the initial kicks given to the cluster, periodic transitions between regular and chaotic regimes are obtained. A study of initial conditions leading up to such transitions shows that the major factor that determines the extent of the chaotic behavior is the initial partitioning of the kinetic energy between the rotational and vibrational motion. From the analysis of the time evolution of various properties it is concluded that the basic role of this initial partitioning is to control the energy transfer between the kinetic and the potential energy.