Work

Collisional effects in the formation of cold guided beams of polar molecules

Year: 2009

Type: article

Abstract: High fluxes of cold polar molecules are efficiently produced by electric guiding and velocity filtering. Here, we investigate different aspects of the beam formation. Variations of the source parameters such as density and temperature result in characteristic changes in the guided beam. These are observed in the velocity distribution of the guided molecules as well as in the dependence of the signal of guided molecules on the trapping electric field. A model taking into account velocity-dependent collisional losses of cold molecules in the region close to the nozzle accurately reproduces this behaviour. This clarifies an open question on the parameter dependence of the detected signal and gives a more detailed understanding of the velocity-filtering and guiding process.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/11/5/055030

Authors: M Motsch, C Sommer, M Zeppenfeld, L D van Buuren, P W H Pinkse, G Rempe

Institutions: Max Planck Society, Max Planck Institute of Quantum Optics

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $919

Funder: Deutsche Forschungsgemeinschaft