Luminescence of Diatomic Molecular Ions
Open Access
- 1 December 1971
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 26 (12) , 1998-2007
- https://doi.org/10.1515/zna-1971-1209
Abstract
The ionic species N2 + B, CO+ A, CO+ B, and O2 + b have been produced by irradiation with the He I resonance line. Franck-Condon-factors both for excitation and deexcitation have been deduced from the fluorescence of the molecular ions. Most of them agree with calculated values of the Franck-Condon-factors. Measurements at different pressures ranging from 0.005 to 5 Torr lead to the deactivation cross sections for collisions with the parent molecule. N2 +B also is deactivated in collisions with O2. Cross sections vary between 50 Å2 and 250 Å2 depending upon the ionic species and its vibrational quantum number. The deexcitation is described as a radiationless transition where electronic energy is transfered into vibrational energyKeywords
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