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

We study frustrated double ionization (FDI) in a strongly-driven heteronuclear molecule HeH+ and compare with H-2. We compute the probability distribution of the sum of the final kinetic energies of the nuclei for strongly-driven HeH+. We find that this distribution has more than one peak for strongly-driven HeH+, a feature we do not find to be present for strongly-driven H-2. Moreover, we compute the probability distribution of the principal quantum number n of FDI. We find that this distribution has several peaks for strongly-driven HeH+, while the respective distribution has one main peak and a 'shoulder' at lower principal quantum numbers n for strongly-driven H-2. Surprisingly, we find this feature to be a clear signature of the intertwined electron-nuclear motion.