Study on deformation of thick-wall short-circuited solenoids in a strong magnetic field in application to their use in a reactor with plasmoid in ection

For the purpose of investigating the possibility of using pulse linear systems with in ection of colliding plasmoids as a neutron source for subcritical nuclear reactor cylindrical liners deformation in stpong magnetic fields (30-50T) is studied. Lead, copper and brass cylinders of 30-60 mm length with internal diameter from 23 to 40 mm have been investigated. Wall thickness varied from 5 to 20 mm' The inductor made of copper strip with external diameter from 31 to 40 mm permits to produce currents up to 250 kA, which ensures in the inductor-passive liner gap fields up to 70 T. MaximuM velocity which attaing 105 m/s has been recorded. From the comparison of tiMes of attaining maximum on current and field oscillograms in the gap the conclusion is drawn that basic expansion occurs when current in the inductor begins to drop. Variations of external cylinder radii in time are given