A Laser-Triggered Switch Employing Solid Dielectrics.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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A focused, Q-spoiled laser was used to induce electrical breakdown of the solid dielectric between two charged electrodes. The effect of the following parameters on the breakdown delay was studied laser focal point, applied voltage 30-85 KV, charging polarity, laser power 20-90 MW, dielectric thickness 10-20 mils, and dielectric type. Delay times as short as 3 nsec, with 1 nsec jitter, were recorded. Graded dielectrics were found to decrease switch closure time through the formation of multiple breakdown channels. Observed results seem consistent with the avalanche-streamer theory of solid breakdown. Author
- Electrical and Electronic Equipment
- Electricity and Magnetism