Abstract:The radial temperature distributions in the central part of arcs burning through polyethylene (PE) tubes are estimated by measuring the half‐width of Hα line spectrum and using the electron density versus Stark half‐width and the electron density versus temperature characteristics. Estimation is carried out for various tube inner diameters (2 and 4 mm) and dc arc currents (5, 10 and 15 A). The result shows that the temperature at the arc center is around 10,000 K, and it tends to increase as the tube inner dia… Show more
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