Calculation of shockless compression of metals up to 40 Mbar under magnetic implosion of liners

This paper presents the results of calculations of liner implosion without the formation of shock waves under the influence of a current up to 70 MA and a magnetic field induction up to 20 MGs (magnetic pressure up to 16 Mbar) in devices with a disk explosive magnetic generator. It is shown that during deep implosion of two-layer (Cu–W) and (Cu–Ta) liners, the shockless pressure in tungsten and tantalum can reach 40 Mbar (hydrodynamic cumulation). The inner part of the liner, whose mass is more than 32% of its total mass, may remain in a solid-state dynamically strengthened state at a temperature of its copper skin layer up to 38 eV.