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dc.contributor.author	Dalgarno, Alexander
dc.contributor.author	Tscherbul, Timur V.
dc.contributor.author	Pavlovic, Zoran
dc.contributor.author	Sadeghpour, Hossein R.
dc.contributor.author	Côté, Robin
dc.date.accessioned	2011-09-16T00:38:48Z
dc.date.issued	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.identifier.uri	http://nrs.harvard.edu/urn-3:HUL.InstRepos:5132920
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
dash.depositing.author	Dalgarno, Alexander
dc.date.available	2011-09-16T00:38:48Z

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