Nitrogen metastable (N2(A 3 Σ u + )) in a cold argon atmospheric pressure plasma jet: Shielding and gas composition

N 2 ( A 3 Σ u + ) metastable species are detected and measured in a non-equilibrium atmospheric pressure plasma jet by laser induced fluorescence. A shielding device is used to change the ambient conditions additionally to the feeding gas composition. Varying the amount of N2 and air admixed to the...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2016-05, Vol.108 (18), p.184101-184101
Main Authors: Iseni, Sylvain, Bruggeman, Peter J., Weltmann, Klaus-Dieter, Reuter, Stephan
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Admixtures
Applied physics
Atmospheric pressure
Capillary flows
Cold pressing
Electron impact ionization
Electrostatics
Emission coefficient
Feeding
Fluorescence quenching
Gas composition
Laser induced fluorescence
Laser theory
Physics
Plasma jets
Plasma Physics
Plasmas
Rotational energy transfer
Second harmonic generation
Shielding
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:N 2 ( A 3 Σ u + ) metastable species are detected and measured in a non-equilibrium atmospheric pressure plasma jet by laser induced fluorescence. A shielding device is used to change the ambient conditions additionally to the feeding gas composition. Varying the amount of N2 and air admixed to the feeding gas as well as changing the shielding gas from N2 to air reveals that the highest N 2 ( A 3 Σ u + ) is achieved in the case of air admixtures in spite of the enhanced collisional quenching due to the presence of O2. The reasons for these observations are discussed in detail.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4948535