Plasma jets produced by conical wire array z-pinches propagating in an ambient medium

Physics – Plasma Physics

Scientific paper

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Scientific paper

Experiments to study the interaction of radiatively cooled supersonic jets with an ambient medium were carried out on the 1MA MAGPIE pulsed power generator. The jets (produced by conical wire array z-pinches) provide a test-bed for investigating astrophysical proto-stellar jets. Two techniques were developed to provide an ambient material around the laboratory jets of a density relevant to astrophysical observations. Ablation of a foil produced a side-wind of plasma through which the jet was propagated - a long interaction length enabled us to study the development of shocks in both the jet and the wind. Other experiments were performed with a jet propagating in a quasi-static argon gas cloud. Bow shocks were formed in the ambient gas and the effect of varying the jet density was seen on the velocity of this shock. This research was sponsored by Sandia National Laboratories, Albuquerque, and the SSAA program of NNSA under DOE Cooperative Agreement DE-FC03-02NA00057.

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