High-velocity dense plasma production at high carrying out currents

For the purpose of obtaining dense high-temperature plasma the process of plasma motion in an accelerator where plasma jets of ''spouting'' pinch type are formed is considered. The process when acceleration inside the mozzle related to gas raking is presented as an accessory process. The latter is required for current increase in the discharge while the main process accompanied by mass drop and velocity jump occurs out side the mozzle in the working chamber. The accelerator and the chamber have been filled with hydrogen under pressure of 100 tor. The central shorter tantalum electrode represents a rod of 10 mm diameter the outer stainless steel electrode has an internal diameter of 40 mm. The discharge has been ignited at a certain distance from the insulator and propagated in the form of a continuous plasma piston along the electrodes of 240 mm length. The discharge current equals 1400 kA. The typical longitudinal photoscanning of plasma bunch motion outside the nozzle is given. Maximum plasma bunch velocity has reached 1.7x107 cm/c. The pointed out effects of mass drop and the presenece of intraplasma magnetic insulation open the prospects of obtaining high temperature plasma flows with 1019-1021 cm-3 densities