Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2010-02-01

Journal: PHYSICS OF PLASMAS

Included Journals: EI、SCIE

Volume: 17

Issue: 2

ISSN: 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.