Dynamics of OH(2Π)–He collisions in combined electric and magnetic fields

Timur V. Tscherbul; Gerrit C. Groenenboom; Roman V. Krems; Alex Dalgarno

doi:10.1039/B819198K

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Faraday Discussions

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Dynamics of OH(²Π)–He collisions in combined electric and magnetic fields

Timur V. Tscherbul , Gerrit C. Groenenboom , Roman V. Krems and Alex Dalgarno

Faraday Discuss., 2009, 142, 127-141

DOI: 10.1039/B819198K
Received 29 Oct 2008, Accepted 16 Dec 2008
First published on the web 19 May 2009
This article is part of the collection: Cold and Ultracold Molecules

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Abstract
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We use accurate quantum mechanical calculations to analyze the effects of parallel electric and magnetic fields on collision dynamics of OH(²Π) molecules. It is demonstrated that spin relaxation in ³He–OH collisions at temperatures below 0.01 K can be effectively suppressed by moderate electric fields of order 10 kV cm⁻¹. We show that electric fields can be used to manipulate Feshbach resonances in collisions of cold molecules. Our theoretical results can be tested in experiments with OH molecules in Stark decelerated molecular beams and electromagnetic traps. PACS numbers: 33.20.-t, 33.80.Ps.

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Dynamics of OH(²Π)–He collisions in combined electric and magnetic fields

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