Wavelet analysis of arc noises at threshold currents

Author

Bochkarev, Maxim B. ; Uimanov, Igor V.

Author_Institution

Inst. of Electrophys., Acad. of Sci., Ekaterinburg, Russia

fYear

2002

fDate

2002

Firstpage

372

Lastpage

375

Abstract

A wavelet analysis of the oscillations of the current, voltage, and visible radiation intensity of a vacuum arc discharge with tungsten and cadmium cathodes having a clean surface have been performed for near threshold current. The temporal resolution was better than 1 ns for electric measurements and better than 5 ns for light intensity measurements. It has been found that for currents close to the threshold current the current voltage, and light intensity oscillations are bursts of duration 17-25 ns for tungsten and 40 ns for cadmium.

Keywords

cadmium; cathodes; electric noise measurement; optical variables measurement; oscillations; tungsten; vacuum arcs; wavelet transforms; Cd; W; cadmium cathodes; clean surface; current oscillations; electric measurements; light intensity oscillations; near threshold current; tungsten cathodes; vacuum arc discharge; visible radiation intensity; voltage oscillations; wavelet analysis; Arc discharges; Cadmium; Cathodes; Electric variables measurement; Performance analysis; Threshold current; Threshold voltage; Tungsten; Vacuum arcs; Wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on

Print_ISBN

0-7803-7394-4

Type

conf

DOI

10.1109/ISDEIV.2002.1027386

Filename

1027386