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论文类型：期刊论文

发表时间：2013-08-01

发表刊物：PLASMA SCIENCE & TECHNOLOGY

收录刊物：SCIE、EI、Scopus

卷号：15

期号：8

页面范围：780-786

ISSN号：1009-0630

关键字：screw ring-ring electrode; oxygen atomic density; nitrogen molecular density; average electron density; conduction current

摘要：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.