2008/12/15 by M. Motsch, Michael Motsch, Christian Sommer +5 · 19 citations
Chemistry · Computer Science · Physics and Astronomy · #Atomic physics #Beam (structure) #Chemical polarity #Cold Atom Physics and Bose-Einstein Condensates #Computational physics #Electric field #Molecular beam #Molecular physics #Molecule #Nozzle #Optics #Physics #Polar #Quantum Information and Cryptography #Quantum mechanics #SIGNAL (programming language) #Spectroscopy and Laser Applications #Thermodynamics #Trapping #physics.chem-ph
paper · pdf · doi:10.1088/1367-2630/11/5/055030
published in New Journal of Physics 11(5), 055030 (IOP Publishing)
arxiv created 2008/12/15 · openalex publication_date 2009/05/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.