Effect of nuclear motion on tunneling ionization rates of molecules
نویسندگان
چکیده
We show that the observable rate of tunneling ionization of a molecule in intense low-frequency laser field is affected by nuclear motion and can essentially differ from a bare electronic characteristic calculated for fixed nuclei. Both the absolute value of the rate and the shape of its orientation dependence are affected. The effect is significant for I ∼ 1014 W/cm2 and becomes more pronounced at lower intensities. An isotope effect in tunneling ionization of H2 and D2 is predicted. The results are compared with available experiments. PACS numbers: 32.80.Rm, 33.80.Rv, 42.50.Hz
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