| 摘要 |
PURPOSE:To enable to clearly perform division between a discharge part and a non-discharge part by a simple electrode structure by coating an electrode with a dielectric whose region for electrode discharge has a larger specific dielectric constant and region for no discharge has a smaller specific dielectric constant. CONSTITUTION:In a constitution wherein a high voltage is impressed between a ground side electrode and a high voltage side electrode, thus producing the discharge 15 between both the electrodes, at least one of both electrode tubes 8 is coated with two kinds of dielectric whose region for discharge has a larger specific dielectric constant and region for no discharge has a smaller specific dielectric constant. As a result, the discharge part 16 and the non-discharge part 17 are formed on the electrode tube 8. Thereby, the division between the discharge part 16 and the non-discharge part 17 can be clearly performed in a dielectric electrode 1, and accordingly a voiceless discharge which makes the uniform discharge 15 can be obtained in the discharge part 16. |
