Two-dimensional fiber ablation in the solid-deuteriumZpinch

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Abstract
Initial two-dimensional magnetohydrodynamic computer calculations of the formation and evolution of the solid-deuterium-fiber Z pinch are reported. The computations show that the m=0 instability occurs very early in the discharge. The m=0 behavior leads to the formation of hot spots off axis and enhances the fiber ablation rate. A rapid onset of neutron production occurs when the fiber has totally ablated. The computations are in qualitative agreement with experimental observations at several laboratories and lead to a new interpretation of the experimental diagnostics.