The excitation and collisional deactivation of metastable N/2P/ atoms in auroras

Details The excitation and collisional deactivation of metastable N/2P/ atoms in auroras The excitation and collisional deactivation of metastable N/2P/ atoms in auroras

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85..687z&link_type=abstract

Journal of Geophysical Research, vol. 85, Feb. 1, 1980, p. 687-694.

Physics

Atomic Physics

25

Atomic Collisions, Atomic Excitations, Auroral Arcs, Metastable Atoms, Nitrogen Atoms, Quenching (Atomic Physics), Atom Concentration, Electron Impact, Mathematical Models, Molecular Gases, Oxygen Atoms, Temperature Dependence, Upper Atmosphere

Scientific paper

The concentration and altitude distribution of metastable N(2P) atoms was measured in a diffuse IBC II(+) auroral arc. The dominant N(2P) source is shown to be the dissociative excitation of N2 by electron impact with a minor contribution from the dissociative recombination of N2(+) ions. The possibility that an ion-molecule process involving atomic oxygen and vibrationally excited N2(+) ions is a significant N(2P) source is examined. Values for the proportional yield of N(+), N(2P), N(2D), and N(4S) atoms from electron-impact dissociation of N2 under optically thick conditions are given.

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