Measurements of Plasma Flow Velocity in DC Plasma Jets Using Perpendicular and Parallel Mach Probes

概要

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A rotating electric probe system has been developed to measure the parameters of spray plasma jets from a dc plasma torch at atmospheric pressure. Four different types of unmagnetized single probes have been used for the diagnostics of high power-flux plasma-two probes are mutually perpendicular ('perpendicular mach probe') and the remaining two are oppositely directed to each other ('parallel mach probe')-to measure the plasma flow velocity and density along the axial and radial directions of the plasma flame. Near the nozzle exit of a 15 kW plasma torch, plasma flow velocity, density and electron temperature are measured as〜910 m/s, 4×10^<13>cm^<-3> and 4.7 eV, respectively.
社団法人応用物理学会の論文
1995-08-15