Explosive Magnetic Generators Of 'Potok' Family

Among the known types of electromagnetic energy sources, the explosive magnetic generators (EKG) are the best characterized in terms of their specific energy output and cost. The results of studies on "POTOK" - family helical and multicomponent disk EMGs of various output energy are presented. The physical model of a helical EMG is considered, which describes the effects of circuit compression ratio and dynamic contact point velocity on energy gain and the helix figure of merit. The family of helical EMGs with inner diameters ranging from 50 to 240 mm have been developed and studied. These EMGs can generate 1 to 20 MA current pulses with 3 to 50 /spl mu/s characteristic risetimes into the loads of 25 to 750 nH unductance. With high- inductance helices used in these generators, having insulated turns distributed in a specific way along their axes, 400-fold or more energy amplification can be achieved in experiments. The operation of helical-dink EMG with transmission lines of 200 and 500 mm radii has been studied experimentally. The experimental data are reported. The issues of energy extraction from EMG using explosive and electric-explosive (wire and foil) current opening switches are discussed. For explosive opening switches some techniques of conductor disruption have been tested, based on either throwing the toil at the ribbed dielectric barrier or using the dielectric shaped-charge jets. A device based on disk EMG has been developed and described, 400 mm in diameter and having a foil opening switch, which allows to deliver 10 MJ energy to the load provided with a liner ponderomotor unit with current across the liner 35 MA high and its characteristic risetime 1.1 /spl mu/s.