Multi-Megamp, Multi-Terawatt Inductive Pulse Compression System Operation
AIR FORCE WEAPONS LAB KIRTLAND AFB NM
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Pulse power systems employing inductive storeopening switch technology represent attractive drivers for high energy, high power plasma experiments. Employing electrically exploding conductor fuse opening switches, an inductive pulse compression system has been built, tested and is in routine use as a power conditioning system charged by a 2 MJ capacitive primary store at the AFWL. The switch, interrupting 15-20 MA currents against 300-500 KV voltages decreases the risetime of the low impedance capacitor bank from 1.5 microS to 200 nS when operated into a 6 nH load. Detail measurement of resistivity of exploded foil fuses shows good agreement with resistivity data previously published for low energy, low power operation. The use of multiple staged fuses of different parameters offers the possibility of further reduction in risetime, andor increase in final resistivity of the open switch. The use of pulse shortening techniques permits conceptual and practical extension of simple, economical prime energy stores to larger energies without sacrifice of energy delivery time.
- Electrical and Electronic Equipment
- Plasma Physics and Magnetohydrodynamics