The impact of electron-electron correlation in ultrafast attosecond single ionization dynamics
Froebel FG, Ziems KM, Peschel U, Gräfe S, Schubert A (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 53
Article Number: 144005
Journal Issue: 14
Abstract
The attosecond ultrafast ionization dynamics of correlated two-or many-electron systems have, so far, been mainly addressed investigating atomic systems. In the case of single ionization, it is well known that electron-electron correlation modifies the ionization dynamics and observables beyond the single active electron picture, resulting in effects such as the Auger effect or shake-up/down and knock-up/down processes. Here, we extend these works by investigating the attosecond ionization of a molecular system involving correlated two-electron dynamics, as well as non-Adiabatic nuclear dynamics. Employing a charge-Transfer molecular model system with two differently bound electrons, a strongly and a weakly bound electron, we distinguish different pathways leading to ionization, be it direct ionization or ionization involving elastic and inelastic electron scattering processes. We find that different pathways result in a difference in the electronic population of the parent molecular ion, which, in turn, involves different subsequent (non-Adiabatic) postionization dynamics on different time scales.
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Germany (DE)How to cite
APA:
Froebel, F.G., Ziems, K.M., Peschel, U., Gräfe, S., & Schubert, A. (2020). The impact of electron-electron correlation in ultrafast attosecond single ionization dynamics. Journal of Physics B-Atomic Molecular and Optical Physics, 53(14). https://doi.org/10.1088/1361-6455/ab8c21
MLA:
Froebel, F. G., et al. "The impact of electron-electron correlation in ultrafast attosecond single ionization dynamics." Journal of Physics B-Atomic Molecular and Optical Physics 53.14 (2020).
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