Stabilization of Bound State Decay in an Intense Monochromatic High-Frequency Field

Authors

N. L. Manakov, Voronezh State UniversityFollow
M. V. Frolov, Voronezh State University, Voronezh, Russia
Bogdan Borca, Institute for Space Sciences, Bucharest, Romania
Anthony F. Starace, University of Nebraska-LincolnFollow

Date of this Version

12-1-2000

Comments

Published in JETP Letters, Vol. 72, No.6, 2000, pp. 294–297. Copyright © 2000 MAIK “Nauka/Interperiodica”; http://www.maik.ru
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.

Abstract

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.