https://doi.org/10.1007/s100530070050
Theoretical study of energy transfer in Rb(7S) + Rb(5S) and Rb(5D) + Rb(5S) collisions
1
University of Latvia, Institute of Atomic Physics and Spectroscopy, Raina
bulv. 19, 1586 Riga, Latvia
2
University of Kaiserslautern, Dept. of Physics, Postfach 3049, 67653 Kaiserslautern, Germany
Received:
13
November
1998
Revised:
22
November
1999
Published online: 15 October 2000
We present results of theoretical studies of the non-resonant excitation transfer
in Rb(7S) + Rb(5S) and Rb(5D) + Rb(5S) collisions at thermal collision energies. Rb2
adiabatic molecular terms correlating with the 5S+7S, 5S+5D and 5P+5P states of separated
atoms were calculated for internuclear distances R > 20 a.u. using asymptotic approximation.
Mechanisms of
collisional population and quenching of the 5D state were treated on the basis of the computed
molecular terms, and the respective cross-sections were calculated. Theoretical cross-sections
are in good agreement with the experimental values at thermal collision energies (
K).
PACS: 34.50.Fa – Electronic excitation and ionization of atoms (including beam-foil excitation and ionization) / 34.20.-b – Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
