Abstract
The N 2 Lyman-Birge-Hopfield band is the only N 2 band system which has been identified in spacecraft glow. These bands are thought to arise from the recombination of N( 4S) atoms on the spacecraft surface. The absence of band systems such as the 1PG normally observed in laboratory afterglows resulting from N( 4S) recombination is attributed to the higher N atom kinetic energy in the spacecraft case. A brief review of the processes for the initial population the radiating states in laboratory afterglows is presented. Extensions of these processes to the N atom energies that occur in spacecraft recombination are employed to suggest the emission of other band systems that may (or may not) be expected.
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