Electron and Vibrational Distributions in \(N_2\) Flowing Discharges and Post-discharges at Reduced Gas Pressure

Authors

  • A. Ricard Université de Toulouse, CNRS, LAPLACE, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
  • M. Capitelli Institute of Science and Technology of Plasmas-CNR-Bari-Italy.

DOI:

https://doi.org/10.9734/bpi/mono/978-81-19217-08-3/CH22

Keywords:

N2 plasmas modeling, electron and vibrational excitation in N2 positive column, CARS, electron and vibrational excitation in N2 afterglow, electron super-elastic collisions

Abstract

Relaxation of the electron and vibrational distribution functions have been calculated in function of residence time in N2 electrical discharges and post-discharges. Calculations results are compared to the measurements of N2 radiative states intensity and N2(X,v) vibrational density by CARS in a N2 DC positive column where the following plasma parameters: Electron density, gas temperature, electric field have been measured.

In the discharge the vibrational temperature get bigger with the residence time for t < 10-2 s. In the post-discharge the vibrational distribution is evolving in such a manner that the high levels are overpopulated as the low vibrational level populations are dropping

Published

2023-04-20

How to Cite

A. Ricard, & M. Capitelli. (2023). Electron and Vibrational Distributions in \(N_2\) Flowing Discharges and Post-discharges at Reduced Gas Pressure. Plasmas Afterglows With \(N_2\) for Surface Treatments - Edition 3, 43–55. https://doi.org/10.9734/bpi/mono/978-81-19217-08-3/CH22

Issue

Plasmas Afterglows with \(N_2\) for Surface Treatments - Edition 3

Section

Contents