Vila, A.; Zhu, J.; Scrinzi, A.; Emmanouilidou, A.
(2018):
Intertwined electronnuclear motion in frustrated double ionization in driven heteronuclear molecules.
In: Journal of Physics BAtomic Molecular and Optical Physics, Vol. 51, No. 6, 65602

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Abstract
We study frustrated double ionization (FDI) in a stronglydriven heteronuclear molecule HeH+ and compare with H2. We compute the probability distribution of the sum of the final kinetic energies of the nuclei for stronglydriven HeH+. We find that this distribution has more than one peak for stronglydriven HeH+, a feature we do not find to be present for stronglydriven H2. Moreover, we compute the probability distribution of the principal quantum number n of FDI. We find that this distribution has several peaks for stronglydriven HeH+, while the respective distribution has one main peak and a 'shoulder' at lower principal quantum numbers n for stronglydriven H2. Surprisingly, we find this feature to be a clear signature of the intertwined electronnuclear motion.