Nonadiabatic coupling in cold collisions of spin-polarized metastable hydrogen atoms
2007 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, Vol. 76, no 5, 052709- p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:uu:diva-14956DOI: 10.1103/PhysRevA.76.052709ISI: 000251326400085OAI: oai:DiVA.org:uu-14956DiVA: diva2:42727