DOI: 10.1109/plasma.2004.1339824
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T. Iwao, P. Cronin, D. Bendix, J. Heberlein

Abstract: In plasma cutting systems, a highly constricted arc plasma is used to locally melt the material to be cut. The workpiece serves as the anode, and a narrow nozzle leads to the arc constriction between the cathode and the anode. The quality of the cut is dependent on the characteristics of the constricted arc near the anode surface, i.e. the temperature and velocity distributions downstream of the nozzle. To determine temperature distributions in the arc, spectroscopic measurements were made on a commercial oxy…

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