Breakdown Voltage of CO2 at Temperatures around 4000K and in Range from 300 to 700K

Toshiro Matsumura; Yasunobu Yokomizu; Pablo C. Almiron; Kazuma Yamamoto; Daisuke Ohta; Masatoyo Shibuya

doi:10.1541/ieejpes.125.1063

Abstract

The breakdown voltage of high temperature CO₂ was measured at temperatures around 4000K and in the temperature from 300 to 700K at an absolute pressure of 0.1MPa. A voltage was applied to the high temperature CO₂ through a set of two rod electrodes made of stainless steel with a diameter of 2mm. The gap length between the electrodes was adjusted to be of 1mm. The breakdown voltage of the hot CO₂ proved to decrease in inverse proportion to the increase in temperature, in the range from 300 to 700K. Further increase in temperature of the CO₂ reduced the breakdown voltage more markedly. For example, at 4000 K the breakdown voltage was measured to be of 55V. This breakdown voltage is only 1.1% of that at room temperature.

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