Abstract
Electronic excitation of nitrogen molecules in collisions of 2.3-keV ions has been investigated by means of ion-impact energy-loss spectroscopy. Vibrational band structures in the lowest five singlet and triplet excited states of are resolved with a resolution of 0.13-eV full width at half maximum. The relative intensities of the vibrational band structures agree with the prediction from the Franck-Condon principle. Computer simulation of the observed spectrum suggests the participation of the optically forbidden transition into excitation of molecules by the -ion impact.
- Received 5 January 1982
DOI:https://doi.org/10.1103/PhysRevA.25.3376
©1982 American Physical Society