Abstract

The general theory of transitions from bound state to continuum in the electromagnetic wave field was first developed in Ref. ¹. If the condition γ <1 (γ– Keldysh's parameter) is held the general expression for photoionization probability takes the form Here ${\text{E}}_{\text{a}}=\sqrt{2m{I}^3}/\text{e}\hslash$is the characteristic internal atomic field, I is the ionization potential, and E is the electromagnetic wave field.

© 1994 IEEE