The adiabatic mechanism of the collisional broadening of Rydberg states via a loosely bound resonance state of ambient gas atoms
- 14 March 1992
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 25 (5) , 971-986
- https://doi.org/10.1088/0953-4075/25/5/011
Abstract
The adiabatical mechanism of the oscillations of the broadened cross sections produced by collisions of Rydberg alkali atoms with ground-state atoms of an ambient alkali gas is presented. The dependence of the oscillations of the cross sections on the principal quantum number n arises due to the oscillations of the mixing parameter for the pseudocrossing between the 3P ion state energy curve of the ambient gas atom and the Rydberg state dependent on n. The latter oscillations are generated by the oscillations of the Rydberg electron wavefunction in the coordinate space. The numerical results obtained are in good agreement with the experimental data for different colliding pairs. The matching of the adiabatical picture and the conventional impulse approximation is discussed.Keywords
This publication has 18 references indexed in Scilit:
- Negatively charged xenon atoms and clustersPhysical Review Letters, 1989
- Stable negative ions of the heavy alkaline-earth atomsJournal of Physics B: Atomic, Molecular and Optical Physics, 1989
- Binding energies forpelectrons in negative alkaline-earth elementsPhysical Review A, 1989
- Collisions between Sr Rydberg atoms of intermediate and high principal quantum numbers and noble gases at thermal energiesJournal of Physics D: Applied Physics, 1988
- The photodissociation of molecules near the ionisation thresholdThe European Physical Journal D, 1986
- Interaction of Rydberg atoms and thermal electrons with K, Rb and Cs atomsJournal of Physics B: Atomic and Molecular Physics, 1986
- Impact broadening of alkali Rydberg levels in pure and mixed alkali vapoursThe European Physical Journal A, 1983
- Position and width of the resonance in electron-potassium scattering from self-broadening of Rydberg statesJournal of Physics B: Atomic and Molecular Physics, 1982
- Theoretical study of low-energy electron and positron scattering on Be, Mg and CaJournal of Physics B: Atomic and Molecular Physics, 1981
- Exchange interaction between two different atoms at large distancesTheoretical Chemistry Accounts, 1973