Hannover 2020 – scientific programme

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MO: Fachverband Molekülphysik

MO 10: Collisions and Reactions

MO 10.1: Talk

Wednesday, March 11, 2020, 11:00–11:15, f142

Electron emission asymmetry in multiphoton dissociation of H₂ — •Patrick Froß, Denhi Martinez, Nicolas Camus, Thomas Pfeifer, and Robert Moshammer — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

When a diatomic molecule dissociates the released electron can either propagate along the neutral or the ionized atom. Depending on the dissociation pathways the electron is preferentially emitted in the direction of one or the other. This so-called electron localization asymmetry can be measured and gives information on the underlying dissociation pathways. We present results from multiphoton-dissociation of molecular hydrogen using single 35fs pulses with a central wavelength of 400nm (I=1· 10¹⁴ W/cm²) and a reaction microscope to image ions and electrons in coincidence. We report and explain the characteristic electron localization asymmetry behavior observed for the dissociation of H₂ depending on the nuclear electron correlation. To our knowledge these results are the first of their kind in the regime of multiphoton-ionization.