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Nonadiabatic coupling in cold collisions of spin-polarized metastable hydrogen atoms
Pennsylvania State University.
Harvard-Smithsonian Center for Astrophysics.
Institut für Physik, Humboldt-Universität zu Berlin.
Institut für Physik, Humboldt-Universität zu Berlin.
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2007 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 76, no 5, 052709- p.Article in journal (Refereed) Published
Abstract [en]

Previous calculations of low-temperature cross sections for collisions between spin-polarized metastable hydrogen atoms are improved to include nonadiabatic radial and angular coupling at large interatomic separations. The electrostatic dipole-quadrupole interaction produces nonadiabatic radial coupling between (2s,2p) and (2p,2p) states, while the Coriolis interaction produces nonadiabatic angular coupling. Both of these long-range contributions are handled in a space-fixed atomic gauge that is particularly convenient for a spin-polarized system. The improved theoretical results are compared with an existing experiment.

Place, publisher, year, edition, pages
2007. Vol. 76, no 5, 052709- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-14956DOI: 10.1103/PhysRevA.76.052709ISI: 000251326400085OAI: oai:DiVA.org:uu-14956DiVA: diva2:42727
Available from: 2008-02-01 Created: 2008-02-01 Last updated: 2017-12-11

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Froelich, Piotr

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