Precursor phenomenon model for multiwire arrays

This paper presents a heuristic model that can be used to estimate the dyna mics of the wire array implosion, A two-shell precursor model has been deve loped. Expressions for the maximum precursor current and the precursor kine tic energy have been obtained, It is suggested that the difference in the r esistance of the core and the corona of an individual wire is the reason fo r the precursor appearance. The precursor current increases sharply as the current rise time is lengthened. The most efficient way to suppress the pre cursor is to reduce the resistance of the core.