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Indexed by:期刊论文

Date of Publication:2009-12-01

Journal:PLASMA SCIENCE & TECHNOLOGY

Included Journals:SCIE、EI、Scopus

Volume:11

Issue:6

Page Number:693-698

ISSN No.:1009-0630

Key Words:atmospheric pressure plasma jets; radio frequency discharge; electron density

Abstract:An indirect method for measuring the electron density of radio frequency atmospheric pressure plasma jets (RF-APPJ) based on the discharge voltage and current wave forms is presented. An equivalent circuit of the plasma discharge is assumed by taking into account the electrode capacitance, serial resistance and inductance of the bulk plasma, as well as the sheath impedance. Based on the circuit model, the electron density can be obtained according to Ohm's law. By using this method, the effects of the electrode shape and discharge gap on the electron density are discussed.