Observation of electron energy discretization in strong field double ionization.


We report on the observation of discrete structures in the electron energy distribution for strong field double ionization of argon at 394 nm. The experimental conditions were chosen in order to ensure a nonsequential ejection of both electrons with an intermediate rescattering step. We have found discrete above-threshold ionization like peaks in the sum energy of both electrons, as predicted by all quantum mechanical calculations. More surprisingly, however, is the observation of two above-threshold ionization combs in the energy distribution of the individual electrons.

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@article{Henrichs2013ObservationOE, title={Observation of electron energy discretization in strong field double ionization.}, author={Kevin Henrichs and Markus Waitz and Florian Trinter and H Kim and Adrian J Menssen and Helena Gassert and Hendrik Sann and Th Jahnke and J Wu and Martin Pitzer and Marten Richter and Markus S Sch{\"{o}ffler and Maksim Kunitski and Reinhard D{\"{o}rner}, journal={Physical review letters}, year={2013}, volume={111 11}, pages={113003} }