The beam-foil spectrum of nitrogen has been studied between 300 and 1250 Å at beam energies of 0.5–2MeV. Some newly observed lines have been identified and the lifetimes of some excited levels of N II, N III, N Iv, and N v have been measured.
J. P. BUCHET, M. C. POULIZAC, and M. CARRÉ, "Beam-Foil Study of Nitrogen in the Vacuum Ultraviolet," J. Opt. Soc. Am. 62, 623-626 (1972)