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A: Fachverband Atomphysik

A 25: Poster Session I

A 25.37: Poster

Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal

Coulomb rescattering and the ionization enhancement around the twice pondermotive energy — •P. L. He^1,2, K. Z. Hatsagortsyan¹, and C. H. Keitel¹ — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany — ²Shanghai Jiao Tong University, Shanghai 200240, China

In this work, we proposed a method to regularize the Coulomb divergence in the Improved Strong Field Approximation, which takes into account the Coulomb interaction via the Born approximation within the framework of Strong Field Approximation. With this method, the ionization enhancement around twice the ponderomotive energy of the ejected electron is analyzed. By comparing the relevant classical trajectories and the quantum orbits, insights into the enhancement and ionization mechanisms are gained.