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arXiv · 2107.13844

Non-adiabatic Strong Field Ionization of Atomic Hydrogen

Daniel Trabert·Nils Anders·Simon Brennecke·Markus S. Schöffler·Till Jahnke·Lothar Ph. H. Schmidt·Maksim Kunitski·Manfred Lein·Reinhard Dörner·Sebastian Eckart
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Abstract

We present experimental data on the non-adiabatic strong field ionization of atomic hydrogen using elliptically polarized femtosecond laser pulses at a central wavelength of 390 nm. Our measured results are in very good agreement with a numerical solution of the time-dependent Schrödinger equation (TDSE). Experiment and TDSE show four above-threshold ionization (ATI) peaks in the electron's energy spectrum. The most probable emission angle (also known as 'attoclock-offset angle' or 'streaking angle') is found to increase with energy, a trend that is opposite to standard predictions based on Coulomb interaction with the ion. We show that this increase of deflection-angle can be explained by a model that includes non-adiabatic corrections of the initial momentum distribution at the tunnel exit and non-adiabatic corrections of the tunnel exit position itself.

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Daniel Trabert, Nils Anders, Simon Brennecke, Markus S. Schöffler, Till Jahnke, Lothar Ph. H. Schmidt, Maksim Kunitski, Manfred Lein, Reinhard Dörner, Sebastian Eckart. 2022-01-03. Non-adiabatic Strong Field Ionization of Atomic Hydrogen. https://doi.org/10.1103/physrevlett.127.273201

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