Photo-Ionization of Hydrogen Atom in a Circularly Polarized Standing Electromagnetic Wave**The project supported by National Natural Science Foundation of China under Grant No. 10075004 with the calculations supported by the High Performance Computing Center of China (Beijing)

Abstract

Applying time-independent non-perturbative formalism to the photo-ionization of hydrogen atom immersed in a strong circularly polarized standing electromagnetic wave, we calculate the shift of energy levels and the distortion of wave functions for the hydrogen atom, the ionization cross section induced by the standing wave, and the angular distribution of photoelectrons and obtain some interesting results.