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DY: Fachverband Dynamik und Statistische Physik
DY 26: Focus Session: Water – from Atmosphere to Space III (joint session CPP/DY)
DY 26.5: Vortrag
Dienstag, 10. März 2026, 15:15–15:30, ZEU/LICH
Properties of micrometre-sized supercooled water droplets — Claudia Goy1, •Frédéric Caupin2, Felix Lehmkühler1, and Robert E. Grisenti3,4 — 1Deutsches Elektronen Synchrotron DESY, Hamburg, Germany — 2Université Claude Bernard Lyon 1, Villeurbanne, France — 3GSI, Darmstadt, Germany — 4J. W. Goethe-Universität, Frankfurt am Main, Germany
Water displays a wide range of anomalous behaviors, many of which become particularly pronounced in the supercooled state, where its properties deviate strongly from those of other liquids. A prevailing hypothesis suggests that, at low temperatures, water may locally adopt two distinct structural motifs. This presentation will discuss results from temperature-dependent experiments that probe the physical and chemical properties of liquid water. The studies employ evaporatively cooled liquid jets in vacuum, investigated with techniques such as Raman spectroscopy and X-ray spectroscopy. These approaches enable a detailed examination of inter- and intramolecular vibrational modes, providing insight into the molecular dynamics of cooling water and optical properties, including the refractive index. Together, these experimental methods offer a comprehensive view of the temperature-dependent behavior of water, shedding light on the complex interactions that drive its anomalies. Through these studies, we aim to elucidate the mechanisms governing water’s unique behavior in the supercooled regime and contribute to a deeper understanding of its structural transformations and physical properties.
Keywords: molecular water; laser spectroscopy; supercooled liquids; liquid jet