Research Papers in Physics and Astronomy


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Published in JETP Letters, Vol. 72, No.6, 2000, pp. 294–297. Copyright © 2000 MAIK “Nauka/Interperiodica”;
Used by permission.
Translated from Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, Vol. 72, No. 6, 2000, pp. 426–431. Original Russian Text Copyright © 2000 by Manakov, Frolov, Borca, and Starace.


The formalism of complex quasienergies is used for exact calculation of the field-dependent decay rate for a weakly bound particle (in the model of a three-dimensional zero-range potential) in a strong monochromatic laser field. It is shown that the adiabatic (quasistationary) stabilization regime in this model occurs at frequencies ω exceeding the binding energy and only in a limited intensity range. A simple estimate is obtained for the critical field of stabilization breakdown. The effect may be observed for the decay of H ions in the field of a neodymium laser of femtosecond duration.

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