Performance of triggered multi gap plasma closing switches filled with air, nitrogen and a nitrogen/oxygen mixture

Hogg, M. and Timoshkin, I. and MacGregor, S. and Given, M. and Wilson, M. and Wang, T.; (2014) Performance of triggered multi gap plasma closing switches filled with air, nitrogen and a nitrogen/oxygen mixture. In: Proceedings of the XXth International Conference on Gas Discharges and their Applications. UNSPECIFIED, FRA, pp. 598-601.

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Abstract

This paper presents an experimental investigation into operation of a triggered, two electrode switch energised with a HV impulses superimposed over a DC charging voltage. A sphere-sphere topology with an electrode separation of 2 mm was DC energised to 6 kV, 7 kV and 8 kV and triggering impulses of varying dV/dt have been used. Breakdown voltage, time delay to breakdown and jitter have been measured for air, nitrogen and a 60% nitrogen/40% oxygen mixture. It is shown that higher dV/dt and higher DC energisation provide more stable and shorter time delays to breakdown.