Session U11: Focus Session: Aerosols, Clusters, Droplets: Physics and Chemistry of Nanoobjects IV: Metal Clusters I
8:00 AM–11:00 AM, Thursday, March 16, 2006
Baltimore Convention Center Room: 303
Sponsoring Unit:
DCP
Chair: Knut Asmis, Fritz Haber Institute, Berlin
Abstract ID: BAPS.2006.MAR.U11.8
Abstract: U11.00008 : Source for a Temperature-Controlled Metal Cluster Beam
10:12 AM–10:24 AM
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Abstract 
Authors:
Wei Jiang
Forrest Payne
Louis Bloomfield
(University of Virginia)
Metal clusters can be produced easily by laser vaporization of a sample into an inert cooling gas. We have used a pulsed Nd:YAG laser to evaporate cobalt from a rotating rod into a 20cm-long narrow pipe filled with helium gas, injected by a pulsed gas valve. The outgoing part of the pipe (15cm long) is attached to a helium refrigerator and an electrical heater, which allow us to control the pipe's temperature over the range from 60K to room temperature. If the gas-cluster mixture stays in the pipe long enough before supersonic expansion, it reaches thermal equilibrium with the pipe.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.U11.8