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Nested-array Z pinches are concentric, two layer wire assemblies---an exterior (driver) layer and an interior (target) layer. On the 20-MA Z accelerator they produce record-high x-ray power, 40% over a single array, but the mechanism of power enhancement remains unclear. The observed kinematics of the nested arrays is best described by a model that allows the drive mass to penetrate the target mass. At assembly the load filament's mutual inductance requires current to switch rapidly from the drive to the target array.
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Terry et al. (1999) studied this question.
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