The authors report the results of investigations of the operation of a fast current opening switch, with a 10**1**3-10**1**6 plasma density produced either by dielectric surface flashover or by explosive emission of graphite. A series of two pulses was applied to two diodes in parallel. The first pulse produced plasma in the first diode, which closed that diode gap by the arrival time of the second pulse. The first, shorted, diode then acted as an erosion switch for the second pulse. A factor of 2. 5-3 for power multiplication was obtained under optimum conditions. The opening-switch resistance during the magnetic insulation phase, neglecting the electron losses between the switch and the generating diode, exceeded 100 OMEGA . The duration of the rapid opening phase was less than 5 ns under optimum conditions. This method of plasma production does not require external plasma sources, and permits a wide variation of plasma density, which in turn allows high inductor currents and stored energies.
|Number of pages||3|
|Journal||IEEE Transactions on Plasma Science|
|Publication status||Published - Dec 1987|
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics