Electron-nitrogen molecular collisions in high-temperature nonequilibrium airAb initio calculation of vibrational excitation and deexcitation cross sections of N2 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 deexcitation rate coefficients are tabulated for electron temperatures of 1100-55,000 K. The present tabulation supercedes 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.
Document ID
19860062231
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Huo, W. M. (NASA Ames Research Center Moffett Field, CA; Notre Dame, University, IN, United States)
Mckoy, V. (NASA Ames Research Center Moffett Field, CA, United States)
Gibson, T. L. (California Institute of Technology Pasadena, United States)
Lima, M. A. P. (NASA Ames Research Center Moffett Field, CA, United States)