Recent pulsed-power experiments for controlled plasma fusion at VNIIEF

The paper presents results of investigations aimed at creation of high-power explosive sources of soft x-ray radiation (SXR) for thermonuclear targets ignition. Successful tests of basic elements of the power system of such sources: a disk magneto-cumulative generator of 480 mm diameter and explosive current opening switch are carried out. These elements will provide with the current pulses of 50...70 MA amplitude at a rise time of 0.5...1 ??s. The technology of the experiments performance aimed at generation of the SXR, powered from the explosive current sources, is developed. The SXR pulses of 55 ns length and energy of -800 kJ are recorded at the liner current of 14 MA with the rise time of 1 ??s. Analysis of the experimental data is carried out using a 2D MHD code. The most probable scenario of implosion of single and nested array liners is determined. A conclusion about perspectives of the developed direction and its competitiveness with stationary facilities is made.