Ionization with low-frequency fields in the tunneling regime

  title={Ionization with low-frequency fields in the tunneling regime},
  author={Judith Dur{\'a} and Nicolas Camus and Alexandre Thai and Alexander Britz and Michael Hemmer and Matthias Baudisch and Arne Senftleben and Claus Dieter Schr{\"o}ter and Joachim Ullrich and Robert Moshammer and Jens Biegert},
  journal={Scientific Reports},
Strong-field ionisation surprises with richness beyond current understanding despite decade long investigations. Ionisation with mid-IR light has promptly revealed unexpected kinetic energy structures that seem related to unanticipated quantum trajectories of the electrons. We measure first 3D momentum distributions in the deep tunneling regime (γ = 0.3) and observe surprising new electron dynamics of near-zero momentum electrons and extremely low momentum structures, below the eV, despite very… 

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Resonant structures in the low-energy electron continuum for single ionization of atoms in the tunnelling regime

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We analyze the formation of the low-energy structure (LES) in above-threshold ionization spectra first observed by Quan et al. [1] and Blaga et al. [2] using both quasi-classical and quantum

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It is shown that the LES arises due to an interplay between multiple forward scattering of an ionized electron and the electron momentum disturbance by the Coulomb field immediately after the ionization.

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