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Indexed by:期刊论文

Date of Publication:2013-08-01

Journal:PLASMA SCIENCE & TECHNOLOGY

Included Journals:SCIE、EI、Scopus

Volume:15

Issue:8

Page Number:780-786

ISSN No.:1009-0630

Key Words:screw ring-ring electrode; oxygen atomic density; nitrogen molecular density; average electron density; conduction current

Abstract:An atmospheric-pressure argon plasma jet with screw ring-ring electrodes in surface dielectric barrier discharge is generated by a sinusoidal excitation voltage at 8 kHz. The discharge characteristics, such as rotational and vibrational temperature of nitrogen, electronic excitation temperature, oxygen atomic density, nitrogen molecular density, and average electron density, are estimated. It is found that the rotational temperature of nitrogen is in the range of 352 similar to 392 K by comparing the simulated spectrum with the measured spectrum at the (CIIu)-I-3 -> B-3 Pi(g)(Delta nu = -2) band transition, the electronic excitation temperature is found to be in the range of 3127 similar to 3230 K by using the Boltzmann plot method, the oxygen atomic and nitrogen molecular density are of the order of magnitude of 10(16) cm(-3) by the actinometry method, and the average electron density is of the order of magnitude of 10(12) cm(-3) by the energy balance equation. Besides, the effective power, conduction, and displacement current are measured during the discharge.