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Phys. Rev. A 67, 050704(R) (2003) [3 pages]

Threshold laws for collisional reorientation of electronic angular momentum

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Roman V. Krems* and Alexander Dalgarno
Harvard-MIT Center for Ultracold Atoms and Institute for Theoretical Atomic and Molecular Physics, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138

Received 27 October 2002; published 28 May 2003

It is shown that the velocity dependence of cross sections for projection-changing transitions in collisions of paramagnetic atoms or molecules with structureless targets near threshold has the form v2Δm when Δm is even and v2(Δm+1) when Δm is odd, where Δm is the change in the projection quantum number and v is the relative velocity.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.050704
DOI:
10.1103/PhysRevA.67.050704
PACS:
34.50.-s

*Email address: rkrems@cfa.harvard.edu