Oscillatory behavior of Rydberg-state total cross sections in the collisions-He and-Ne
- 1 July 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 16 (1), 150-156
- https://doi.org/10.1103/physreva.16.150
Abstract
The -He and -Ne collisions have been studied by means of optical spectrometry in the projectile energy range 10-150 keV. Very similar and regular oscillations in the Rydberg-state total cross sections are found for He I in both collisions and for singlet as well as triplet excitation. These oscillations are well described by the Rosenthal model. The Hei states display two superimposed oscillations for center-ofmass collision energies above 6.4 keV. We interpret this as the opening of a third exit channel, believed to be the He i . No (or very little) structure is found in the Rydberg-state total cross sections for He ii, Ne i, Ne ii, or Ne iii levels.
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