Production of Atmospheric-Pressure Nitrogen Glow Discharge Using Pulsed Power Technologies and its Characteristics.

Accession number;04A0471166
Title;Production of Atmospheric-Pressure Nitrogen Glow Discharge Using Pulsed Power Technologies and its Characteristics.
Author;TAKAKI KOICHI(Iwate Univ., JPN)   SASAKI TAKASHI(Hitachi Via Mechanics, Ltd., JPN)   KATO SHOJI(Iwate Univ., JPN)   NODA CHIHARU(Iwate Univ., JPN)   MUKAIGAWA SEIJI(Iwate Univ., JPN)   HOSOKAWA MASATO(Iwate Univ., JPN)   FUJIWARA TAMIYA(Iwate Univ., JPN)   
Journal Title;Papers of Technical Meeting on Pulsed Power Technology, IEE Japan
Journal Code:L4030A
ISSN:
VOL.PPT-04;NO.15-25;PAGE.1-6(2004)
Figure&Table&Reference;FIG.9, REF.22
Pub. Country;Japan
Language;Japanese
Abstract;Atmospheric pressure glow discharge plasma was generated using needle-array type electrode in pure nitrogen and the voltage-current (V-I) characteristics of the glow discharge were obtained in a wide current range from 1mA to 60A. A pulsed high-voltage with short rise time under 10ns was used to generate homogeneous streamer whole discharge space, which prevent the glow-to-arc transition coursed by inhomogeneous thermalization. Semiconductor opening switch (SOS) diodes were employed as opening switches in the inductive energy storage pulsed power generation system. Damping resistor was used to control the glow discharge current and was altered in order to obtain the V-I characteristics. The voltage of the atmospheric pressure glow discharge was almost constant until the discharge current became 0.3A under our experimental condition. The voltage, however, increased with the current higher than 0.3A. The glow voltage was increases with increasing gas pressure. Electron density and temperature in a positive column of the glow discharge at 40A discharge current were obtained to 4*1012cm-3 and 1.3eV from calculation based on nitrogen swarm data. Number densities of ions, metastable molecules and atomic radical particles were also predicted based on chemical analysis using measured voltage-current characteristics. (author abst.)