High voltage vacuum discharge characteristics

Issue		Eur. Phys. J. Appl. Phys. Volume 15, Number 3, September 2001


Page(s)		207 - 212
Section		Plasmas, Discharges and Processes
DOI		10.1051/epjap:2001184

DOI: 10.1051/epjap:2001184

Eur. Phys. J. AP 15, 207-212 (2001)

High voltage vacuum discharge characteristics

S.K. Händel and F.R. Nordhage

Department of Applied Science, Mid Sweden University, 87188 Härnösand, Sweden

frank.nordhage@tnv.mh.se

(Received: 6 December 2000 / Revised and Accepted: 23 April 2001 )

Abstract
Investigation of the high voltage vacuum discharge characteristics - current derivative (di/dt), current, voltage, and soft as well as hard X-rays -versus time has been carried out. Recorded traces indicate pinching of the interelectrode discharge column two or three times during which the voltage increases to values as high as the initial voltage or even higher. X-ray radiation of high penetration power is emitted during these events. In addition, sausage instabilities have been observed during the pinch giving rise to extreme penetrating X-rays caused partly by the pinch voltage and partly by the sausage voltage. Visible electrode studies show the fact that the discharge is restricted to a narrow column. Finally, a theoretical treatment of the discharge mechanism that seems to be in good agreement with the experimental result is also presented.

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