TITLE

Spatial nonuniformity of electron energy in a microwave atmospheric-pressure microplasma

AUTHOR(S)
Li-Guo Zhu; Zhi-Bo Zhang; Xi-Ming Zhu; Yi-Kang Pu; Ze-Ren Li
PUB. DATE
April 2009
SOURCE
Applied Physics Letters;4/13/2009, Vol. 94 Issue 15, p151502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The characteristics of the electron energy in a microwave atmospheric-pressure argon microplasma are investigated by a spatially resolved optical emission spectroscopy. By adding tiny amount of xenon (<1 ppm) as tracer gas into the argon discharge, it is found that the spatial distribution of the electrons with energy >8.3 eV is quite different from that of the electrons with energy >11.5 eV. Spatial distribution of the population ratio between 4p and 5p levels of Ar atom is also determined. Furthermore, with a collisional-radiative model, it is found that the spatial variation of this population ratio is mainly attributed to the spatial nonuniformity of the effective electron temperature.
ACCESSION #
37831837

 

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