Spectroscopic density determination of nitrogen species in an ECR discharge

Abstract
Absolute line intensities of NI up to NV in the VUV region have been measured in an electron cyclotron resonance discharge running in nitrogen and helium-nitrogen mixtures. Using first-order approximation formulae the densities of NI up to NV were determined. For special NII and NIII lines the influence of excitation by inner-shell ionization on density determinations is discussed.