Heidelberg 2015 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 21: Posters 4: Novelties in Molecular Physics

MO 21.6: Poster

Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer

Channel-Resolved Electron Recollision in Polyatomic Molecules — •Jochen Mikosch, Sascha Birkner, Federico Furch, Alexandria Anderson, Claus Peter Schulz, and Marc J. J. Vrakking — Max-Born-Institut, Berlin, Germany

The emerging strong laser field driven spectroscopies promise to bring unprecedented time- and spatial resolution to atomic and molecular dynamics studies. It has become clear in recent years that a number of the initial simplifying assumptions, such as the adiabatic and the single-electron approximation, can break down and have to be replaced by a multi-electron picture. In particular the appearance of multiple ionization continua in Strong-Field Ionization and High Harmonic Generation of polyatomic molecules is being increasingly investigated theoretically and experimentally. Employing laser-aligned hydrocarbon molecules in a reaction microscope, we are studying how multiple strong-field ionization continua manifest themselves in electron recollision, driven by the strong laser field. Electron diffraction patterns for different fragments promise to characterize ionization channel resolved continuum electron wavepackets, emerging from different Dyson orbitals. This might evolve into an ultrafast dynamical probe of electronic coherences in molecules.