Density of N\(_2\) Active Species in N\(_2\) Dielectric Barrier Discharge Afterglows by Optical Spectroscopy at Atmospheric Gas Pressure

Authors

  • Frank Clément Université de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM UMR 5254, 64600 Anglet, France.
  • Bernard Held Université de Pau et des Pays de l’Adour, LEGP, F-64000 Pau, France.
  • André Ricard LAPLACE, Université de Toulouse, CNRS, INPT, UPS, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.

DOI:

https://doi.org/10.9734/bpi/mono/978-93-49473-93-5/CH12

Keywords:

Cold atmospheric plasmas, Dielectric Barrier Discharges (DBD), N2 afterglows, VUV-IR spectroscopy, N2 active species densities

Abstract

Dielectric Barrier Discharges (DBD) have been used to develop Cold Atmospheric Plasmas and more specifically nitrogen afterglows. The DBD afterglow has been investigated by emission spectroscopy from the VUV (200-300 nm) up to the near IR (1 \(\mu\)m) ranges. A kinetics scheme allowed to determine numerous N2 active species densities. The obtained densities decreased slowly in the afterglow time of (1- 10)10-3s with mean values of 1015 cm-3 for N- atoms, 1012 cm-3 for N2(A) molecules, 1011 cm-3 for O- atoms (coming from air in impurity) and 1010 cm-3 for N2(B,0) radiative molecules. 

The other excited species (N2(B,11), N2 (X,v>4), NO(X, A, B) and O1S.N2 were found at a lower density between 106 and 108 cm-3.

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Published

2025-03-26

How to Cite

Frank Clément, Bernard Held, & André Ricard. (2025). Density of N\(_2\) Active Species in N\(_2\) Dielectric Barrier Discharge Afterglows by Optical Spectroscopy at Atmospheric Gas Pressure. Plasmas Afterglows With N2 for Surface Treatments Synthesis 2024, 268–279. https://doi.org/10.9734/bpi/mono/978-93-49473-93-5/CH12

Issue

Plasmas Afterglows with N2 for Surface Treatments synthesis 2024

Section

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