Azimuthal magnetic flux penetration inwards an instable liner

A cascade system with a light external liner (5-50 μg/cm, 32 mm diameter, Xe, Ar, C3H8) and internal zone, coaxial with it (50-70 μg/cm, 1 mm diameter, solid-body foam of agar + 30% of KCL) is investigated in experiments on current compression of liners and Z-pinches of complex spatial configuration at the Angara-5-1 device. It is shown that the process of energy transfer in a cascade system with a light external shell takes place as a result of azimuthal magnetic flux penetration through the external current layer into pre-axial zone. External plasma is axially inhomogeneous during the transfer. Efficiency of power transfer to internal load is determined from comparison of active loss power in electric discharge chain (1.5 TW) with the power of soft x radiation from the internal zone (0.7 TW). 17 refs., 5 figs