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Indexed by:会议论文

Date of Publication:2009-07-20

Page Number:1

Key Words:等离子体射流;confined;turbulent;spectroscopic;下空;laminar;dielectric;单电极;argon;sinusoidal;

Abstract:A long atmospheric-pressure plasma column confined in a dielectric tube is generated in argon with use of a unipolar electrode configuration driven with a sinusoidal power supply operating at 45 kHz.The electrical characteristics are investigated by means of measuring voltage-current and voltage-power curves at two gas flow states,turbulent and laminar.The gas temperatures are also determined by the spectroscopic analysis of OH A-X spectrum.It is found that the gas flow state imposes appreciable influence on the electrical discharge during its developing in the confined tube,however it does not alter the gas temperature of the generated plasma column,although much heat is released in argon discharge.