Primary and Afterglow Emission from Low-Temperature Gaseous Nitrogen Excited by Fast Electrons
- 1 June 1966
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 44 (11) , 4131-4136
- https://doi.org/10.1063/1.1726594
Abstract
Measurements were made of the primary and afterglow emission decay times of some of the emitting species in an expanded nitrogen flow when excited by a 10‐kV electron beam. Both the first negative system of N2+ and the second positive system of N2 were observed in the afterglow to persist for about 2×10−6 sec. The origin of the afterglow is explained by the possible transfer of energy from ground‐state N2+ ions and secondary electrons to ground state N2 molecules. This is substantiated by observations of the departure from a Boltzmann distribution of the rotational energies in the N2 molecules.Keywords
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