窒素分子発光スペクトル強度比を用いた大気圧ドライエアにおけるストリーマ放電の電界強度計測

菊池 祐介; 米田 晋也; 永田 正義; 川野 涼子; 梅本 貴弘; 海永 壮一朗; 吉村 学; 武藤 浩隆; 釣本 崇夫

doi:10.1541/ieejfms.136.378

Abstract

The electric field strength in streamer discharges in dry air at atmospheric pressure was measured using the intensity ratio of spectral bands of molecular nitrogen. The streamer discharges were produced in the needle-plane electrode by applying the positive impulse voltage. It was shown that the reduced electric field strength of the primary streamer was ∼700 Td. It was clarified that the propagation velocity of the streamer was increased with increasing the applied voltage on the electrode, but the reduced electric field strength slightly decreased. The spatial distribution of the reduced electric field strength in the gap was discussed in terms of the secondary streamer near the needle electrode and the photoemission from the plane electrode.

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