Stuttgart 2012 – scientific programme

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MO: Fachverband Molekülphysik

MO 21: Poster 3: Cluster, Collisions, Energy Transfer, Photochemistry, Spectroscopy in He-Droplets

MO 21.29: Poster

Thursday, March 15, 2012, 16:30–19:00, Poster.IV

Detection of photoelectrons for helium nanodroplet spectroscopy of organic molecules — •Fabian Hohnloser, Markus Müller, and Frank Stienkemeier — Physikalisches Institut, Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg

Electronic spectroscopy of molecules in helium nanodroplets has been exploited applying a variety of detection techniques including fluorescence, droplet beam depletion or ionization processes. In ionization experiments the detection of ions can be hampered when the ions remain attached to the droplet and very large masses have to be detected. We study the option of a simple and efficient setup of detecting photoelectrons in order to do resonance enhanced multiphoton ionization (REMPI) spectroscopy. In comparison with laser-induced fluorescence methods, in particular non-radiative processes of larger organic molecules can be probed in this way.