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MO: Fachverband Molekülphysik
MO 26: Spektroskopie in He-Tröpfchen
MO 26.4: Poster
Thursday, March 13, 2008, 16:30–19:00, Poster C1
IR-spectroscopy of sulfuric acid in liquid He nanodroplets — •Melanie Letzner, Özgür Birer, and Martina Havenith — Department of Physical Chemistry II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Germany
We investigate deuterated sulfuric acid and aggregates with water at ultracold temperatures in helium-nanodroplets in the range from 2650-2680 cm−1. Helium nanodroplets are formed by expansion of helium at 40 bar through a 5 µm nozzle which is kept at a temperature of 16 K. Under these conditions clusters with an average size of 5400 atoms are formed. Measurements were carried out using a high power IR-OPO (cw: 2.7 W) as radiation source.We were able to record rotationally resolved spectra which yield important information on the inherent structure.