Influence of the Stark-effect on the orientation of Rydberg-states in highly ionized nitrogen after ion beam surface interaction at grazing incidence
Abstract
The orientation in the angular momentum distribution of highly ionized N-atoms after the interaction of N-ions with energies up to 15 MeV with a polycrystalline Cu-surface at grazing incidence is investigated by the circular polarization fraction {S}/{I} in fluorescent light. In Rydberg-states of N V, N VI and N VII a dramatic variation of this orientation with respect to the ion-energy and the angle of incidence is observed. We interpret the data in terms of a modification of the collision induced orientation via the Stark-effect in the electric field in the vicinity of the surface caused by the image charge potential of the receding ion.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- March 1984
- DOI:
- 10.1016/0168-583X(84)90201-5
- Bibcode:
- 1984NIMPB...2..252Z