中国物理B ›› 2005, Vol. 14 ›› Issue (6): 1114-1119.doi: 10.1088/1009-1963/14/6/010
• ATOMIC AND MOLECULAR PHYSICS • 上一篇 下一篇
白丽华, 张敬涛, 徐至展
Bai Li-Hua (白丽华), Zhang Jing-Tao (张敬涛), Xu Zhi-Zhan (徐至展)
摘要: Using an unperturbated scattering theory, the characteristics of H atom photoionization are studied respectively by a linearly and by a circularly polarized one-cycle laser pulse sequence. The asymmetries for photoelectrons in two directions opposite to each other are investigated. It is found that the asymmetry degree varies with the carrier-envelope (CE) phase, laser intensity, as well as the kinetic energy of photoelectrons. For the linear polarization, the maximal ionization rate varies with the CE phase, and the asymmetry degree varies with the CE phase in a sine-like pattern. For the circular polarizaion, the maximal ionization rate keeps constant for various CE phases, but the variation of asymmetry degree is still in a sine-like variation pattern.
中图分类号: (Photoionization of atoms and ions)