N₂/SF₆　コンゴウガス　チュウ　ノ　エンメン　フラッシオーバ　トクセイ　ト　ソノ　トクイセイ

By the insertion of the solid dielectric barrier between the needle and the plane, only the negative creeping flashover voltage drastically was reduced by the admixture of SF₆ gas into N₂ gas, and a highly emissive region at the top of a creeping corona was found in their gas mixtures. The effect of SF₆ gas mixture turned from positive to negative depending on the gas pressure. On the corona extension on a small addition of SF₆, the creeping corona has been changed from broad and wide extension to a fine creeping path with an intensive region at its tip by increasing pressure. This change has been well corresponding to the tum of the gas mixture effect