TY - JOUR
T1 - Nonadiabatic coupling in cold collisions of spin-polarized metastable hydrogen atoms
AU - Forrey, Robert C.
AU - Dalgarno, Alex
AU - Vanne, Yulian V.
AU - Saenz, Alejandro
AU - Froelich, Piotr
PY - 2007/11/29
Y1 - 2007/11/29
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevA.76.052709
DO - 10.1103/PhysRevA.76.052709
M3 - Article
AN - SCOPUS:36649015183
SN - 1050-2947
VL - 76
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 052709
ER -