High-intensity approximations applied to multiphoton ionization
- 1 October 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 24 (4), 2044-2049
- https://doi.org/10.1103/physreva.24.2044
Abstract
We show that the most commonly used high-intensity approximations as applied to ionization by strong electromagnetic fields are related. We also discuss the applicability of the steepest-descent method in these approximations, and the relation between them and first-order perturbation theory.Keywords
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