SELECTIVELY EXCITED X-RAY-EMISSION SPECTRA OF N-2

Resonant and non-resonant X-ray emission spectra of N-2 are presented. The role of the parity selection rule in the case of homonuclear diat omic molecules is discussed thoroughly and illustrated by the X-ray em ission spectra. We also discuss how the parity selection rule and the angular anisotropy of the resonant X-ray emission may affect intensiti es in a fluorescence yield measurement of N-2. Simulated vibrational b and profiles calculated using the lifetime-vibrational interference fo rmula are found to be in excellent agreement with the experimental emi ssion bands.