Abstract

One‐ and two‐dimensional magnetohydrodynamic computations have been performed to study the behavior of solid deuterium fiber Z‐pinch experiments performed at Los Alamos and the Naval Research Laboratory. The computations use a tabulated atomic data base and ‘‘cold‐start’’ initial conditions. The computations predict that the solid fiber persists longer in existing experiments than previously expected and that the discharge actually consists of a relatively low‐density, hot plasma which has been ablated from the fiber. The computations exhibit m=0 behavior in the hot, exterior plasma prior to complete ablations of the solid fiber. The m=0 behavior enhances the fiber ablation rate.

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