期刊
PLASMA SOURCES SCIENCE & TECHNOLOGY
卷 24, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0963-0252/24/5/055021
关键词
dielectric barrier discharge (DBD); atmospheric pressure; glow; Townsend-like; radio-frequency; emission spectroscopy; continuum
资金
- French national research agency (ANR) [ANR-09-BLAN-0043-03]
Three homogeneous DBD modes have been observed in argon ammonia Penning mixture. The transition from glow to Townsend-like to radiofrequency modes happens when the frequency increases from 50 kHz and 9.6 MHz. The aim of this paper is to characterize these modes based on the study of optical emission spectra. The transition from glow mode to Townsend-like mode is characterized by stronger argon emissions associated to higher energetic electrons. The radio-frequency mode is characterized by a continuum in the UV-vis range. This continuum is attributed to bremsstrahlung emission. Its presence is explained by a high density of less energetic electrons which is consistent with a decrease of argon emissions and an increase of the NH 336 nm system associated with electrons of low energy.
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