The tentative opinion of modeling plasma formation in metallic wire Z pinch

Numerous experiments in both single wire and in wire arrays have attracted much attention. For the wire array Z-pinch implosions the plasma formation is a key question and very important. By means of analyzing a number of single-wire and multi-wire experiments, we put forward a tentative opinion of modeling plasma formation in the metallic wire. We suggest two models to describe the behavior of a wire array Z-pinch in initial phase. In this phase each wire carries a rising current and behaves independently, in a way similar to that found in single wire Z-pinch experiments in which a comparable current in one wire is employed. Based on oneor/ and two-dimensional magneto-hydrodynamics (MHD) theory, one model is used to simulate the electrical explosion stage of the metallic wire; another is used to simulate the wire-plasma formation stage.