Stabilization of an Atom with Two Autoionizing States in a Strong Resonance Electromagnetic Field

摘要

The ionization rate for an atom with two closely spaced autoionizing states (ASs) in a strong resonance electromagnetic field is calculated. The interaction between ASs via a common continuum is shown to stabilize these ASs in a strong resonance field. This stabilization occurs when the Fano parameters of ASs are almost equal and the resonance detuning and the energy gap between the ASs are of the order of the autoionization widths of the levels. Photoabsorption spectra are considered as the gap between the upper levels increases.