Postdoctoral Research Scientist: Spectroscopy and Dynamics of ions in superfluid helium droplets

Applications are invited for a postdoctoral research scientist position to lead research on a new helium droplet beam spectrometer designed to study ions in helium. The construction of the machine in largely complete. Ions are injected into the supersonic expansion from a cold helium nozzle (~20K). These seed droplet growth. After passing a skimmer, the ionic doped droplets are mass selected, pass through an interaction region, and then energy analyzed again, allowing the size of the droplets after interaction to be determined. Ions are trapped in the droplets by polarization forces and have a vibrational frequency in the trap ~ 1 GHz; Resonant excitation with frequency swept microwave radiation allows the ion to be driven to a high quantum number. The position is available starting immediately and is for one year with a second year available upon mutual agreement. Prior experience with spectroscopy and molecular beams is highly desired. Candidates should send a curriculum vitae, a list of publications (including identifying the 2 or 3 papers that you believe represents you best work), a description of prior experience in instrument design and construction, and arrange to have two letters of recommendation sent, preferably by Email as PDF files sent to Lehmann@virginia.edu. Candidates will be considered until the position is filled.

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