Formation of a closed, spheromak-like magnetic configuration in plasma focus discharges and the enhanced radiation yield in high-current discharges

Summary form only given. The enhanced SXR radiation yield observed in recent pulsed power Z-pinch experiments and the relatively high efficiency of input energy conversion into SXR radiation in certain Filippov-type plasma focus discharges are analyzed in the frame of the concept of self-consistent formation of a closed, spheromak-like magnetic configuration (SLMC) in plasma focus discharges. The relationship is analyzed between the major characteristic features of the 3D resistive two-fluid helicity-rich radiation magnetohydrodynamics of strongly inhomogeneous plasmas, verified by numerous experimental data on the formation of the large-scale (several cm) SLMC with complicated short-scale structure, and the enhanced efficiency of the input energy conversion into SXR radiation. The diagnostics strategy is formulated which is needed for the identification of the role of the effects outlined. Both the diagnostic array requirements and diagnostic space-time scales are discussed.