Letters to the editor

Tunneling ionization of atoms and ions in very strong laser fields

V. D. Taranukhin


Abstract: The rate of tunneling ionization was determined as a function of the radiation intensity taking into account subbarrier and above-barrier tunneling. It was found that the Stark effect in very strong fields may stabilize atoms and ions with respect to ionization and also that the (4n – 1)th harmonics of the pump radiation are suppressed in the nonlinear response of the plasma formed by ionization.

UDC: 621.373.826

PACS: 32.60.+i, 32.80.Fb, 52.50.Jm

Received: 12.07.1991

 English version: Soviet Journal of Quantum Electronics, 1991, 21:11, 1159–1160

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