Dynamics of a Rydberg Hydrogen Atom in a Generalized van der Waals Potential and a Magnetic Field

• 作者: 王德华
• 来源期刊: 中国物理快报(英文版)
• 学科: 物理学
• 关键词: 磁场强度 氢原子 广义 原子动力学行为 经典动力学 外部磁场 混沌运动 相空间轨道
• 年，卷（期）: 2010,（2）
• 页码范围: 73-76
• 页数: 4页
• 分类号: O441 O562.1
• 语种: 英文

摘要

The classical dynamics of a Rydberg hydrogen atom in a generalized van der Waals potential plus a magnetic field is investigated by using the Poincaré surface of section and phase space trajectories method. The dynamical character of this system depends sensitively on the magnetic field strength. The numerical calculations show that for a certain van der Waals potential, its classical dynamics is regular without the external magnetic field. However, with the addition of the external magnetic field, the dynamical property of the Rydberg hydrogen atom begins to change. With the increase of the magnetic field strength, order-chaos-order-chaos types of transition regions are observed for the hydrogen atom. As the magnetic field strength is very large, nearly all the phase space trajectories are chaotic. Under this condition, only chaotic motion appears. This is caused by the diamagnetic Zeeman effect. Our study provides a different perspective on the dynamical behavior of the Rydberg atom in the van der Waals potential and magnetic field.