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Indexed by:期刊论文

Date of Publication:2010-02-01

Journal:PHYSICS OF PLASMAS

Included Journals:SCIE、EI

Volume:17

Issue:2

ISSN No.:1070-664X

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

Abstract: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.