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Coiled arrays, which are cylindrical arrays in which each wire is formed into a helix, suppress the modulation of ablation at the fundamental wavelength. Outside the vicinity of the wire cores, ablation flow from coiled arrays is modulated at the coil wavelength and has a two-stream structure in the r, thetas plane. Within the vicinity of the helical wires, ablation is concentrated at positions with...
Coiled arrays, a cylindrical array in which each wire is formed into a helix, suppress the modulation of ablation at the fundamental wavelength. Outside the vicinity of the wire cores, ablation flow from coiled arrays is modulated at the coil wavelength and has a 2-stream structure in the r,thetas plane. Within the vicinity of the helical wires, ablation is concentrated at positions with the greatest...
Summary form only given. Substantial broadening and clearly visible "red" and "blue" shifts of K-shell spectral lines as a function position along the axis of wire-array Z-pinches have been observed in the time-integrated X-ray spectra from 8-32 wire Al arrays in experiments on the MAGPIE (1 MA, 240 ns risetime) and COBRA (1 MA, 100 ns risetime) pulsed-power generators. To separate...
Summary form only given. We will present experimental observations of the effect of the radial electric field on plasma formation and implosion dynamics in wire array Z-pinches. Experiments were performed on the 1 MA MAGPIE generator, with 8 mm diameter Al wire arrays in configurations in which the polarity of the radial electric field was reversed midway along the wires of an array. The wire cores...
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