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论文类型：期刊论文

发表时间：2010-02-01

发表刊物：PHYSICS OF PLASMAS

收录刊物：SCIE、EI

卷号：17

期号：2

ISSN号：1070-664X

关键字：argon; discharges (electric); plasma density; plasma diagnostics; plasma temperature; spectral line broadening; Stark effect

摘要：A stable plasma column is generated in a quartz tube using a pair of hollow electrodes driven by a sinusoidal power supply of 45 kHz at atmospheric pressure in argon. Two distinct operating modes (low-current and high-current modes) are identified through observing its discharge phenomena, measuring its electrical characteristics, and determining the gas temperatures by spectroscopic diagnosis of Q branch of UV OH spectrum. The electron density in the high-current mode is diagnosed by Stark broadening and is found to be two orders higher than that in low-current mode.