Circularly Polarized Laser Fields, with Different Z, Including Non-Zero Initial Momentum
V.M. Ristić, T.B. Miladinović and J.M. Stevanović
Faculty of Science, Kragujevac University, Radoja Domanovića 12, 34000 Kragujevac, Serbia
Received: July 27, 2010; revised version: December 24, 2010; in final form: January 18, 2011
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In this paper, by estimating the influence of different atom charge Z to the transition rate in tunnel ionization of atoms in strong laser fields we are devoloping further the observations from our earlier work. That is in the process of tunnel ionization including non-zero momentum into calculation of the transition rate gives result in lower transition rates for ejecting electrons from atoms by low-frequency laser fields, indicating that much of the photons are engaged in transferring energy to the free electron and thus unable to contribute to the effect of ionization. This is a conclusion that needs further experimental testing, which would clarify the mechanisms of tunnel ionization.
DOI: 10.12693/APhysPolA.119.761
PACS numbers: 32.80.-t, 32.80.Fb, 32.80.Rm