Nitrogen metastable (N2(A3Σu+)) in a cold argon atmospheric pressure plasma jet: Shielding and gas composition

被引：23
|
作者：
Iseni, Sylvain [1 ,2 ,4 ]
Bruggeman, Peter J. [3 ]
Weltmann, Klaus-Dieter [2 ]
Reuter, Stephan [1 ,2 ]
机构：
[1] Ctr Innovat Competence Plasmatis, D-17489 Greifswald, Germany
[2] Leibniz Inst Plasma Sci & Technol INP, D-17489 Greifswald, Germany
[3] Univ Minnesota, Dept Mech Engn, 111 Church St SE, Minneapolis, MN 55455 USA
[4] Univ Orleans, CNRS, GREMI, UMR 7344, BP 6744, F-45067 Orleans 2, France
来源：
APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 18期
关键词：
RATE CONSTANTS; STREAMERS; DISCHARGE;
D O I：
10.1063/1.4948535
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
N-2(A(3)Sigma(+)(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 N-2 and air admixed to the feeding gas as well as changing the shielding gas from N-2 to air reveals that the highest N-2(A(3)Sigma(+)(u)) is achieved in the case of air admixtures in spite of the enhanced collisional quenching due to the presence of O-2. The reasons for these observations are discussed in detail. Published by AIP Publishing.
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页数：4
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