Abstract
Vacuum ultraviolet emission from levelsv' = 5, 6, 7 and 8 of the forbidden (B'3Σ-u— X1Σ+g) transition of N2is observed in active nitrogen. The emission obeys the rate law I = 1.1 X 103[N]2[N2]/([N2] + 2.0 X 10-8) mol cm-3s-1over the pressure range 130 to 1070 Pa (1 to 8 Torr) and is enhanced in argon carriers. N2(B3IIg) is shown to be the precursor of N2(B'3Σ-u) in the nitrogen afterglow.

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