Rostock 2019 – scientific programme

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MO: Fachverband Molekülphysik

MO 7: Experimental Techniques

MO 7.6: Talk

Monday, March 11, 2019, 15:15–15:30, S HS 002 Biologie

Setting up an experiment for electron-impact induced fluorescence spectroscopy of liquids — •Dana Bloß, Andreas Hans, Philipp Schmidt, Christian Ozga, Arno Ehresmann, and André Knie — Institut für Physik und CINSaT, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel

The investigation of liquids is a wide and interdisciplinary research field due to the fact that liquid water and aqueous solutions are the natural environment for many chemical and biological systems. However, the investigation of liquids with established experimental methods of atomic and molecular physics are challenging because of the typically required high vacuum conditions. With the development of the liquid microjet technique the investigation of volatile liquids in vacuum became possible. We already combined the liquid microjet with photon-impact induced fluorescence spectroscopy and observed a so far unknown broad emission between 170 - 340 nm which could be assigned to the liquid phase of the waterjet. For a better understanding of this emission feature we present an experiment for electron-impact induced fluorescence spectroscopy on liquid microjets. With this set-up secondary processes can be investigated by direct excitation of the liquid with electrons of kinetic energies ranging from 400 eV to 3 keV.