中国物理B ›› 2011, Vol. 20 ›› Issue (6): 63203-063203.doi: 10.1088/1674-1056/20/6/063203

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Photoionization microscopy of hydrogen atom near a metal surface

杨海峰, 汪磊, 柳晓军, 刘红平   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • 收稿日期:2010-12-14 修回日期:2011-01-11 出版日期:2011-06-15 发布日期:2011-06-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10774162).

Photoionization microscopy of hydrogen atom near a metal surface

Yang Hai-Feng (杨海峰), Wang Lei (汪磊), Liu Xiao-Jun (柳晓军), Liu Hong-Ping (刘红平)   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2010-12-14 Revised:2011-01-11 Online:2011-06-15 Published:2011-06-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10774162).

摘要: We have studied the ionization of Rydberg hydrogen atom near a metal surface with a semiclassical analysis of photoionization microscopy. Interference patterns of the electron radial distribution are calculated at different scaled energies above the classical saddle point and at various atom-surface distances. We find that different types of trajectories contribute predominantly to different manifolds in a certain interference pattern. As the scaled energy increases, the structure of the interference pattern evolves smoothly and more types of trajectories emerge. As the atom approaches the metal surface closer, there are more types of trajectories contributing to the interference pattern as well. When the Rydberg atom comes very close to the metal surface or the scaled energy approaches the zero field ionization energy, the potential induced by the metal surface will make atomic system chaotic. The results also show that atoms near a metal surface exhibit similar properties like the atoms in the parallel electric and magnetic fields.

Abstract: We have studied the ionization of Rydberg hydrogen atom near a metal surface with a semiclassical analysis of photoionization microscopy. Interference patterns of the electron radial distribution are calculated at different scaled energies above the classical saddle point and at various atom-surface distances. We find that different types of trajectories contribute predominantly to different manifolds in a certain interference pattern. As the scaled energy increases, the structure of the interference pattern evolves smoothly and more types of trajectories emerge. As the atom approaches the metal surface closer, there are more types of trajectories contributing to the interference pattern as well. When the Rydberg atom comes very close to the metal surface or the scaled energy approaches the zero field ionization energy, the potential induced by the metal surface will make atomic system chaotic. The results also show that atoms near a metal surface exhibit similar properties like the atoms in the parallel electric and magnetic fields.

Key words: photoionization microscopy, interaction of atom with surface, semiclassical theory

中图分类号:  (Photoionization of atoms and ions)

  • 32.80.Fb
34.35.+a (Interactions of atoms and molecules with surfaces) 03.65.Sq (Semiclassical theories and applications)