Collisions of Trapped Molecules With Slow Beams

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Collisions of Trapped Molecules With Slow Beams

Show simple item record Dalgarno, Alexander Tscherbul, Timur V. Pavlovic, Zoran Sadeghpour, Hossein R. Côté, Robin 2011-09-16T00:38:48Z 2010
dc.identifier.citation Tscherbul, Timur V., Zoran Pavlovic, Hossein R. Sadeghpour, Robin Côté, and Alexander Dalgarno. 2010. Collisions of trapped molecules with slow beams. Physical Review A 82(2): 022704. en_US
dc.identifier.issn 1050-2947 en_US
dc.description.abstract We present a theoretical study of molecular-trap loss induced by collisions with slow atomic beams based on an explicit analysis of collision kinematics in the laboratory frame and a rigorous quantum description of atom-molecule scattering in external fields. The theory is applied to elucidate the effects of nonuniform magnetic and optical trapping fields on low-temperature collisions of OH \((J=\frac{3}{2},M_J=\frac{3}{2},f)\) molecules with \(^{4}\)He atoms. Our calculations quantify the extent to which both elastic and inelastic cross sections are suppressed by external trapping fields, clarify the role of small-angle scattering in trap loss, and may benefit future experiments on collisional cooling of molecules in electromagnetic traps. The calculated cross sections for trap loss in \(^{4}\)He + OH collisions are consistent with recent experimental observations at low beam energies [ B. C. Sawyer \(et al.\) Phys. Rev. Lett. 101 203203 (2008)], demonstrating the importance of including the effects of nonuniform trapping fields in theoretical simulations of cold collision experiments with trapped molecules and slow atomic beams. en_US
dc.description.sponsorship Astronomy en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.relation.isversionof doi:10.1103/PhysRevA.82.022704 en_US
dash.license LAA
dc.title Collisions of Trapped Molecules With Slow Beams en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Physical Review A en_US Dalgarno, Alexander 2011-09-16T00:38:48Z

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