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Phys. Rev. Lett. 97, 083201 (2006) [4 pages]

Controlling Electronic Spin Relaxation of Cold Molecules with Electric Fields

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T. V. Tscherbul and R. V. Krems
Department of Chemistry, University of British Columbia, Vancouver, B.C. V6T 1Z1, Canada

Received 3 June 2006; published 22 August 2006

Wepresent a theoretical study of atom-molecule collisions in superimposed electricand magnetic fields and show that dynamics of electronic spinrelaxation in molecules at temperatures below 0.5 K can be manipulatedby varying the strength and the relative orientation of theapplied fields. The mechanism of electric field control of Zeemantransitions is based on an intricate interplay between intramolecular spin-rotationcouplings and molecule-field interactions. We suggest that electric fields mayaffect chemical reactions through inducing nonadiabatic spin transitions and facilitateevaporative cooling of molecules in a magnetic trap.

©2006 The American Physical Society

URL:	http://link.aps.org/doi/10.1103/PhysRevLett.97.083201
DOI:	10.1103/PhysRevLett.97.083201
PACS:	34.50.-s; 33.80.Ps 34.50.-s Scattering of atoms and molecules 33.80.Ps Optical cooling of molecules; trapping YEAR: 2006

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