Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 20: Cold Molecules (joint session MO/A)
A 20.7: Vortrag
Mittwoch, 13. März 2019, 15:30–15:45, S HS 002 Biologie
Cold beam of water dimer — •Helen Bieker1,2,4, Jolijn Onvlee1, Melby Johny1, Lanhai He1,5, Thomas Kierspel1,2,4, Boris Sartakov3, Andrey Yachemenev1, Sebastian Trippel1,3, Daniel A. Horke1,2, and Jochen Küpper1,2,4 — 1Center for Free-Electron Laser Science, DESY — 2The Hamburg Center for Ultrafast Imaging, University Hamburg — 3General Physics Institute, Russian Academy of Sciences — 4Department of Physics, University of Hamburg — 5Institute of Atomic and Molecular Physics, Jilin University, Changchun, China
To unravel the microscopic details of intermolecular interactions in water, we prepared controlled samples of size- and isomer-selected water clusters. Inhomogeneous electric fields allowed us to create pure samples of individual structural isomers or of size-selected molecular clusters and to disperse molecules in a beam according to their quantum states [1].
Here, we aim to develop an understanding of the structures of water clusters containing a few monomer units. We present our first results on the production of size-selected samples using supersonic expansions - subsequent separation of water dimer, extending previous studies.
[1] Y.P. Chang, D. A. Horke, S. Trippel and J. Küpper, Int. Rev. Phys Chem. 34, 557-590 (2015)