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Non-dipole recollision-gated double ionization and observable effects

Emmanouilidou, A; Meltzer, T; Corkum, PB; (2017) Non-dipole recollision-gated double ionization and observable effects. Journal of Physics B: Atomic, Molecular and Optical Physics , 50 (22) , Article 225602. 10.1088/1361-6455/aa90e9. Green open access

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Abstract

Using a three-dimensional semiclassical model, we study double ionization for strongly driven He fully accounting for magnetic field effects during the propagation in time. For linearly and slightly elliptically polarized laser fields, we show that recollisions and the magnetic field combined act as a gate. This gate favors more transverse—with respect to the electric field—initial momenta of the tunneling electron that are opposite to the propagation direction of the laser field. In the absence of non-dipole effects, the transverse initial momentum is symmetric with respect to zero. We find that this asymmetry in the transverse initial momentum gives rise to an asymmetry in a double ionization observable.

Type: Article
Title: Non-dipole recollision-gated double ionization and observable effects
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/1361-6455/aa90e9
Publisher version: https://doi.org/10.1088/1361-6455/aa90e9
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: non-sequential double ionization, non-dipole approximation, non-dipole recollision-gating
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: http://discovery.ucl.ac.uk/id/eprint/10049615
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