Good longitudinal symmetry of magnetically driven metal cylindrical liners may be observed at a relatively short time of current rise, for example, in experiments at PEGASUS-2 facility [1]. Because of interaction of the liner withcurrent-conducting edge walls the symmetry of compression may be much worse in experiments with a longer rise time of current delivered by explosive magnetic generators (EMG) [2].The present paper describes the results of study of near-wall effects negative influence on longitudinal symmetry of compression of liners, close in design to experiments at PEGASUS-2 facility [1], but at an order higher duration of current supplied byhelical EMG. The work was conducted within the frames of liner technology program (LT- 1 experiments).
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