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Electron-Nitrogen Molecule Collisions in High-Temperature Nonequilibrium Air

Hou, W. M. and McKoy, V. and Lima, M. A. P. and Gibson, T. L. (1986) Electron-Nitrogen Molecule Collisions in High-Temperature Nonequilibrium Air. In: Thermophysical aspects of re-entry flows. American Institute of Aeronautics and Astronautics , New York, NY, pp. 152-196. ISBN 978-0-930403-10-2.

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Ab initio calculation of vibrational excitation and de-excitation cross sections of N_2 by low-energy resonant electron impact have been carried out. The calculation includes initial target state in v = 0-12 and final target state in v = 0-17. The calculated cross sections are found to agree with available experimental data to within reported experimental error. Effect of target rotation has been investigated. Comparison of vibrational excitation cross sections at J = 0, 50, and 150 shows that the major effect of target rotation is to lower the resonance energy. Vibrational excitation and de-excitation rate coefficients are tabulated for electron temperatures of 1100-55,000 K. The present tabulation supersedes an earlier compilation by the Naval Research Laboratory that was derived from experimental data with a factor-of-two error. The tabulated rate coefficients are suited for flowfield modeling of aeroassisted orbital transfer vehicles.

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Additional Information:© 1986 American Institute of Aeronautics and Astronautics. Presented as Paper 85-1034 at the AIAA 20th Thermophysics Conference, Williamsburg, VA, June 19-21, 1985. We would like to thank Dr. A. U. Hazi for supplying us with his unpublished data. The research of W. H. Huo is supported by NASA under NASA Ames Cooperative Agreement NCC 2-147. The research of V. McKoy, H. A. P. Lima, and T. L. Gibson is supported by NASA under NASA Ames Cooperative Agreement NCC 2-319 .
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AIAA Paper85-1034
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ID Code:62289
Deposited By: Ruth Sustaita
Deposited On:23 Nov 2015 19:38
Last Modified:10 Nov 2021 23:00

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