Abstract

Theory of tunneling ionization of atoms and atomic ions by strong low- frequency laser radiation was developed in Ref.[1] (so called ADK- approach). This theory is based on the conception of the quasi-stationary electromagnetoc field producing tunneling ejection of valence electrons. A complex atom or an atomic ion is considered in the frames of quantum defect method; its wave function is an asymptotic wave function at the large distances from the atomic core. In Ref.[2] the angular and energy distributions of ejected electrons in tunneling ionization were obtained.

© 1997 Optical Society of America