Density of N2 Active Species in N2 Dielectric Barrier Discharge Afterglows by Optical Spectroscopy at Atmospheric Gas Pressure | Chapter 12 | Plasmas Afterglows with N2 for Surface Treatments synthesis 2024

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 μm) 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.

 

Author (s) Details

 

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.

 

Please see the book here:- https://doi.org/10.9734/bpi/mono/978-93-49473-93-5/CH12