Characterization of N and O-atoms, of N2(A) and N2(X,v>13) Metastable Molecules and N2+ ion Densities in Ar-N2 Afterglows Plasmas from Microwave Discharges | Chapter 15 | Plasmas Afterglows with N2 for Surface Treatments synthesis 2024

The findings underscore the potential of N2(A) and N2+ species to enable sustainable and efficient surface treatments with applications ranging from medical devices to advanced material coatings.

 

Afterglow jets of Ar-N₂ flowing microwave discharges are characterized by optical emission spectroscopy. The N and O atoms, the N₂(A) and N₂(X,V>13) metastable molecules and N₂+ ion densities are determined after calibration by NO titration for N and O-atoms and measurements of NO and N₂ band intensities. For an Ar-xN₂ gas mixture with x increasing from 2 to 100% at 4 Torr, 100 Watt and an afterglow time of 310^-3 s at the 5-liter reactor inlet, it is found densities in the ranges of (2-6)10¹⁴cm^-3 for N - atoms, one order of magnitude lower for N₂(X,v>13) and for O - atoms (coming from air impurity), of 10¹⁰ - 10¹¹ cm^-3 for N₂(A) and of 10⁸ - 10⁹cm^-3 for N₂+.

 

Author (s) Details

 

Hayat Zerrouki
Université de Toulouse, CNRS, LAPLACE 118 Route de Narbonne, F-31062 Toulouse Cedex 9, France.

 

 

André Ricard
LAPLACE, Université de Toulouse, CNRS, INPT, UPS, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.

 

Jean-Philippe Sarrette
Université de Toulouse, CNRS, LAPLACE 118 Route de Narbonne, F-31062 Toulouse Cedex 9, France.

 

Please see the book here:- https://doi.org/10.9734/bpi/mono/978-93-49473-93-5/CH15