Explosive magnetic liner devices to produce shock pressures up to 3 TPa

Achieving high pressure shock Hugoniot measurements in cylindrical geometry utilizing a high-explosive pulsed power drive

“…The flux compression of the DEMG was modeled using a time varying inductance from Buyko et al [ 4]. The foil opening switch was approximated by a time-varying resistance extracted from the current and voltage profiles also presented by Buyko et al [3]. The circuit diagram showing this model is presented in Figure 3 and shows coupling between the circuit and the I-D MHD simulation of the liner implosion load.…”

“…Current profiles compared to results reported by Buyko et al[3]. Solid line is from Bukyo, grey dotted line is a first attempt and the black dashed line is the final calculated current profile from the circuit model.…”

A disk EMG system for driving impacting liners to ∼ 20 km/s

“…Magnetic implosion of cylindrical liners in the Z-pinch geo�etry is of interest for high energy density physics, in particular, for producing terapascal shock pressures in various materials [1][2][3][4]. Pulsed power drivers based on disk explosive magnetic flux compression generators (DEMG) with electrically exploded fuse opening switches (FOS), similar to the systems used in the previous experiments, can deliver up to 60-70 MA currents with a characteristic rise time of 1-2 �s, which makes it possible to accelerate up to � 20 g/cm liners to � 20 kmls [2][3][4].…”

“…Pulsed power drivers based on disk explosive magnetic flux compression generators (DEMG) with electrically exploded fuse opening switches (FOS), similar to the systems used in the previous experiments, can deliver up to 60-70 MA currents with a characteristic rise time of 1-2 �s, which makes it possible to accelerate up to � 20 g/cm liners to � 20 kmls [2][3][4]. AI and two-layer liners are considered, which, as predicted by ID simulations, can produce up to 1-3 TPa shock pressures, when accelerated to the above velocities [3,4].…”

“…The system is intended for the ALT-3 experiment to test the efficiency of magnetic implosion of impacting liners and to verify the possibility of shock wave measurements at up to 1 TPa pressures.We describe the physical configuration of the system and its diagnostic suite, which differ significantly from similar systems [3,4]. As compared with [4], changes are made to the physical configuration of individual system units and a number of system parameters: we increase load inductance by a factor of 1.5, use a different transmission line and an AI liner (instead of envisaged two-layer liners) etc.…”