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Mainz 2017 – scientific programme

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MO: Fachverband Molekülphysik

MO 9: Posters 1: Dichroism, VUV and Xray, Clusters, and Cold Molecules

MO 9.10: Poster

Tuesday, March 7, 2017, 17:00–19:00, P OG1

Experimental set-up for dispersed photon emission spectroscopy of liquid microjets — •Christian Ozga1, Andreas Hans1, Robert Seidel2, Philipp Schmidt1, Xaver Holzapfel1, Marvin Pohl2, Bernd Winter2, Arno Ehresmann1, and André Knie11Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany — 2Helmholtz-Zentrum für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany

With the development of liquid microjets the interest in the investigation of the molecular structure of volatile liquids after X-ray irradiation increased progressively. This structure was probed by different measurement techniques ranging from the detection of charged particles, Raman spectroscopy to X-ray emission spectroscopy and revealed e.g. interatomic coulombic decay processes in liquid water as well as different types of hydrogen bonds in bulk liquid water. However, the low energy photon emission regime, i.e. the wavelength region from 40 nm to 650 nm, remains hitherto unexplored. This spectral range acts as a complementary tool for the other techniques allowing a deeper understanding of the still not fully understood molecular structure of liquids, solvated (bio-)molecules and the interaction of solvents and solutes. Here we present an experimental set-up for the detection of dispersed photons with emission wavelengths from 40 nm to 650 nm. It can be easily adapted for the additional measurement of photoelectrons allowing a direct comparison of photon and electron emission.

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