Operation modes of the helium dielectric barrier discharge for soft ionization

被引：33
|
作者：
Mueller, S. [1 ]
Kraehling, T. [1 ]
Veza, D. [2 ]
Horvatic, V. [3 ]
Vadla, C. [3 ]
Franzke, J. [1 ]
机构：
[1] ISAS Leibniz Inst Analyt Wissensch, D-44227 Dortmund, Germany
[2] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 10000, Croatia
[3] Univ Zagreb, Inst Phys, Zagreb 10000, Croatia
来源：
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2013年 / 85卷
关键词：
Soft ionization; Dielectric barrier discharge; Discharge modes; Homogeneous discharge; Filamentary discharge; TEMPERATURE PLASMA PROBE; ATMOSPHERIC-PRESSURE; SPECTROSCOPY; NITROGEN;
D O I：
10.1016/j.sab.2013.04.005
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Among different applications of dielectric barrier discharge (DBD) plasma, the soft ionization ability is certainly one of the most interesting. In this paper the helium plasma jet, produced by a capillary DBD, penetrating in the ambient atmosphere, has been spectroscopically investigated in dependence on applied voltage and helium flow. It was found that the change of the applied voltage leads to different discharge modes. Based on the measurements of the emission spectra of atomic He and N-2(+) and N-2 molecules in the capillary and in the plasma jet with high spatial resolution, it can be assessed in which mode, i.e. under which conditions the plasma jet is expected to be most effective for soft ionization of molecules. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：104 / 111
页数：8
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