Electrodynamic installation for compression of solid substances

Abstract

The installation for the Z-pinch compression of solid substances up to 10 GPa pressure of 40-100 microseconds time duration is described in a paper. The installation is connected to the terminal of the E7-25 type capacitive energy store and it is designed for 10 MA current pulse with 20 kV voltage. The features and structure of experimental installation are described. It is shown that the large axial forces act on the discharge chamber, when the heavy pulse current passes through the chamber's elements. The design of the installation provides the creation of initial squeezing forces in the contact connections of the discharge chamber and the absorption of kinetic energy of the chamber moving after the pulse current passing. With the purpose of restriction of overheating and electrical explosion of researching samples the device for the switching of discharge current from the sample to the low-inductance shunting circuit is included in the structure of the installation. The result of tests with currents up to 6 MA is submitted, as well as experimental data about the allowable current density in contact connections between electrodes and researching sample are given. The result of the first experimental researches is described also.