Velocities of copper and silver ions generated from an impulse vacuum arc

Author

Tsuruta, Koichi ; Sekiya, Kyouhei ; Tan, Osamu ; Watanabe, Gin-ichi

Author_Institution

Dept. of Electr. & Electron. Eng., Ibaraki Univ., Japan

Volume

1

fYear

1996

fDate

21-26 Jul 1996

Firstpage

181

Abstract

Vacuum gaps with a copper and silver needle-cathode were fired by a 13 μs duration half-cycle sinusoidal arc and metal ions were analyzed by a time of flight (TOF) method at variable positions of the acceleration space. Velocities of the ions of each charge state were determined assuming collisionless flight from the cathode region to the outside of the gap. Ions generated at the ignition of the arc flew fast and the velocities were 2.7×10⁴ and 2.0×10⁴ m/s for copper and silver, respectively, regardless of the charge state. The velocities of the ions released with the arc extinction were lower and changed depend on the charge state

Keywords

cathodes; copper; electric breakdown; impulse testing; insulation testing; silver; time of flight spectra; vacuum arcs; vacuum breakdown; vacuum insulation; 13 mus; 2.7E4 m/s; 2E4 m/s; Ag; Cu; arc extinction; charge state; collisionless flight; half-cycle sinusoidal arc; impulse vacuum arc; ion generation; metal ion velocities; needle-cathode; time of flight measurements; Acceleration; Accelerometers; Cathodes; Charge measurement; Copper; Current measurement; Electron tubes; Silver; Time measurement; Vacuum arcs;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on

Conference_Location

Berkeley, CA

Print_ISBN

0-7803-2906-6

Type

conf

DOI

10.1109/DEIV.1996.545346

Filename

545346