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Excellent project and very cool website!
I constructed a hv pulse generator a few years ago, but it's only rated at 4KV with a 100uF pulse capacitor. I've used it to deform aluminum tubes and to shoot aluminum discs into the air, but other than "playing" with it, I found no serious use for it. As time permits, I'm going to construct a water-arc cannon and see how far I can launch a small projectile. FUN STUFF!
Hm, you are sure you have 10ns pulses? That would be an awful good timing... I am building a Marx which is contained in a metallic tube under pressure (to adjust the firing voltage and help to trigger the other gaps via electric field in the tube), but I have a hard time to get such fast discharge times. Anyway, you did a great job! My brother-in-law works for a company doing the same to separate rocks.
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My 500KV Marx Generator
