SINGLE AND DOUBLE TUNNELING IONIZATION OF THE NOBLE GASES EXPOSED TO A LINEARLY OR CIRCULARY POLARIZED LASER FIELD

We theoretically studied different influences like a nonzero initial momentum of ejected electron and the ponderomotive potential on the ionization probabilities and the ion yields for the noble gases atoms in a linearly and circularly polarized electromagnetic field whose intensity varies from 10(12) to 10(14) Wcm(-2). The ionization process occurred completely in the tunneling regime. The calculated values are in reasonable agreement with the experimental data.