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Threshold in excitation of NaI by grazing ion surface scattering

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
148
Issue
5
Identifiers
DOI: 10.1016/0375-9601(90)90986-x

Abstract

Abstract The population of NaI 3p and 4d terms after grazing scattering of fast Na + ions is investigated by optical spectrometry. We observe a threshold in population for the 4d term with respect to projectile energy (velocity) which results in a selective excitation of the 3p term at low energies. The data are interpreted in terms of a model of population via resonant charge exchange at the surface which incorporates the effects of the projectile velocity.

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