UConn-Wesleyan-Yale Chemical Physics Seminar

Spectroscopy of HeN-Molecule Clusters: Tracing the Onset of Superfluidity

Wolfgang Jäeger
Department of Chemistry
University of Alberta (Edmonton, Canada)

High resolution molecular spectroscopy holds great promise to bridge the gap in our knowledge about microscopic, molecular-scale systems on one side and the bulk phase on the other. Spectroscopy of weakly bound complexes has recently been pushed into the mesoscopic size regime with the investigation of medium-sized HeN-molecule clusters. The successive solvation of molecular chromophores with helium atoms promises to shed light on the microscopic evolution of the bulk phase property superfluidity. The evolution of the cluster moments-of-inertia as function of N, the number of helium atoms, shows that the helium atoms begin to decouple from the rotational motion of the monomers. It will be explored how the trends in the spectroscopic constants of the quantum solvated systems can be used to trace the onset of the new property of "microscopic superfluidity".

Tuesday, February 8, 2005
8:00 PM
Gant Science Complex
Physics Department
Room P121

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