Abstract

A new valence state which lies below the first Rydberg state has been observed in N 2, in the 11.3 to 12.1 eV energy range, using an electron impact technique. This state is only excited from 1.3 to ∼3 eV above its threshold through a short lived resonance. Some levels are not clearly resolved but their presence is deduced from the resonant profiles of their differential cross sections. A perturbation in the relative intensities of the C 3Π u vibrational levels is observed when this new state is excited.

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