TITLE

Driving frequency effects on the characteristics of atmospheric pressure capacitive helium discharge

AUTHOR(S)
Moon, Se Youn; Kim, D. B.; Gweon, B.; Choe, W.
PUB. DATE
December 2008
SOURCE
Applied Physics Letters;12/1/2008, Vol. 93 Issue 22, p221506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Atmospheric pressure helium discharge characteristics were investigated for varying driving radio frequencies in the range between 1.86 and 27.1 MHz. As the driving frequency is raised, both gas breakdown and α-γ transition voltages decrease due to the reduction in the electron drift loss. In addition, different discharge features such as normal, abnormal, α, and γ modes show certain dependences on the frequency. Using a simple circuit model, the changes in sheath thickness from 2.35 to 0.11 mm, electron density from 0.26 to 15.6×1011 cm-3 was obtained by raising the frequency from 1.86 to 27.1 MHz.
ACCESSION #
35763849

 

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