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Study of ablation and implosion stages in wire arrays using coupled ultraviolet and X-ray probing diagnostics
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Star and cylindrical wire arrays were studied using laser probing and X-ray radiography at the 1-MA Zebra pulse power generator at the University of Nevada, Reno. The Leopard laser provided backlighting, producing a laser plasma from a Si target which emitted an X-ray probing pulse at the wavelength of 6.65 angstrom. A spherically bent quartz crystal imaged the backlit wires onto X-ray film. Laser probing diagnostics at the wavelength of 266 nm included a 3-channel polarimeter for Faraday rotation diagnostic and two-frame laser interferometry with two shearing interferometers to study the evolution of the plasma electron density at the ablation and implosion stages. Dynamics of the plasma density profile in Al wire arrays at the ablation stage were directly studied with interferometry, and expansion of wire cores was measured with X-ray radiography. The magnetic field in the imploding plasma was measured with the Faraday rotation diagnostic, and current was reconstructed. (C) 2015 AIP Publishing LLC.
|Journal Title||Physics of Plasmas|
|Rights||In Copyright (All Rights Reserved)|
|Rights Holder||AIP Publishing LLC; “This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Anderson, A. A., Ivanov, V. V., Astanovitskiy, A. L., Papp, D., Wiewior, P. P., & Chalyy, O. (2015). Study of ablation and implosion stages in wire arrays using coupled ultraviolet and X-ray probing diagnostics. Physics of Plasmas, 22(11), 112702. doi:10.1063/1.4934980 and may be found at https://aip.scitation.org/doi/10.1063/1.4934980.|