Determination of non-Boltzmann vibrational level populations of excited nitrogen using the Penning ionisation technique
- 14 February 1981
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 14 (3) , 473-481
- https://doi.org/10.1088/0022-3700/14/3/024
Abstract
Vibrational level population distributions of electrical-discharge-excited nitrogen were measured up to nu =7 by means of a Penning ionisation reaction involving He(23S) metastables. Vibrational level populations of N2(X, nu ) were obtained from the N2+(B, nu 1) level concentrations and the inverted matrix of the Franck-Condon factors. A vibrational temperature range of 2000-8000K was covered with all measured vibrational distributions exhibiting non-Boltzmann, near-Treanor quasi-steady-state behaviour.Keywords
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