Gas discharges induced by a high-power and short-pulse microwave

Author

Onoi, M. ; Azuma, K. ; Fujiwara, E. ; Yatsuzuka, M.

Author_Institution

Dept. of Electr. Eng., Himeji Inst. of Technol., Hyogo, Japan

fYear

2000

fDate

4-7 June 2000

Firstpage

205

Abstract

Summary form only given. High power microwave (HPM) with the peak power of 20 MW, pulse width of 14 ns and frequency of 13 GHz generated by a virtual cathode oscillator was irradiated uniformly into a gap with a DC voltage less than the gap-breakdown voltage. The gap consists of two spherical stainless electrodes of 4.1 cm in a diameter. The gap distance is 15 mm. The air pressure was varied from 50 to 760 Torr. Gas discharge luminescence was observed with a high-speed image converter camera. The time history of the applied voltage, the discharge current and the microwave was observed with a digital oscilloscope.

Keywords

electrodes; high-frequency discharges; image convertors; luminescence; plasma diagnostics; plasma pressure; vircators; 13 GHz; 14 ns; 15 mm; 20 mW; 4.1 cm; 50 to 760 torr; DC voltage; air pressure; applied voltage; digital oscilloscope; discharge current; frequency; gap; gap distance; gap-breakdown voltage; gas discharge luminescence; gas discharges; high-power microwaves; high-speed image converter camera; microwave; peak power; pulse width; short-pulse microwaves; spherical stainless electrodes; time history; virtual cathode oscillator; Cathodes; DC generators; Discharges; Frequency; High power microwave generation; Microwave generation; Power generation; Pulse generation; Space vector pulse width modulation; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 2000. ICOPS 2000. IEEE Conference Record - Abstracts. The 27th IEEE International Conference on

Conference_Location

New Orleans, LA, USA

ISSN

0730-9244

Print_ISBN

0-7803-5982-8

Type

conf

DOI

10.1109/PLASMA.2000.855013

Filename

855013