2013/03/31 by Cornelia Hofmann, C Hofmann, Alexandra S. Landsman +7 · 1 citation
Physics and Astronomy · #Laser-Matter Interactions and Applications #Laser-Plasma Interactions and Diagnostics #Quantum chaos and dynamical systems #physics.atom-ph
paper · pdf · doi:10.1088/0953-4075/46/12/125601
published as J. Phys. B: At. Mol. Opt. Phys. 46 (2013) 125601
openalex publication_date 2013/05/24 · arxiv created 2013/05/27 · arxiv updated 2013/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We introduce a method to investigate the longitudinal momentum spread resulting from strong-field tunnel ionization of helium which, unlike other methods, is valid for all ellipticities of laser pulse. Semiclassical models consisting of tunnel ionization followed by classical propagation in the combined ion and laser field reproduce the experimental results if an initial longitudinal spread at the tunnel exit is included. The values for this spread are found to be of the order of twice the transverse momentum spread.