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A: Fachverband Atomphysik
A 19: Interaction with strong or short laser pulses II
A 19.5: Vortrag
Mittwoch, 11. März 2020, 15:15–15:30, f107
Guiding-center motion for electrons in strong laser fields — •Jonathan Dubois1, Simon Berman2, Cristel Chandre3, Turgay Uzer4, Ulf Saalmann1, and Jan-Michael Rost1 — 1Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany — 2School of Natural Sciences, University of California, Merced, Merced, California 95343, USA — 3Aix Marseille Univ, CNRS, Centrale Marseille, I2M, Marseille, France — 4School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA
The ultimate aim of contemporary ultrashort, ultra strong laser physics is to capture movies of electrons during chemical reactions. Apart from obvious technical difficulties, there has always been a fundamental obstacle to the interpretations of these scans: The motion of an electron in combined laser and electrostatic fields is an unsolved problem. We use a canonical change of coordinates in order to describe the electron motion in terms of its guiding-center. We describe a hierarchy of reduced models for the guiding-center motion based on time averaging of the electron dynamics. We use these reduced models to understand, interpret and assess the electron dynamics and to unravel mechanisms behind nonlinear phenomena observed in experiments.