Study of ablation and implosion stages in wire arrays using coupled ultraviolet and X-ray probing diagnostics

Journal Article · Sun Nov 15 00:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4934980· OSTI ID:22489845

Anderson, A. A.; Ivanov, V. V.; Astanovitskiy, A. L.; Wiewior, P. P.; Chalyy, O. ^[1]; Papp, D. ^[1]

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1. University of Nevada Reno, Reno, Nevada 89557 (United States)

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 Å. 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.

• OSTI ID: 22489845
• Journal Information: Physics of Plasmas, Vol. 22, Issue 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
CRYSTALS
CYLINDRICAL CONFIGURATION
ELECTRON DENSITY
EXPANSION
FARADAY EFFECT
IMPLOSIONS
INTERFEROMETERS
LASER-PRODUCED PLASMA
MAGNETIC FIELDS
PLASMA DENSITY
POLARIMETERS
QUARTZ
SHEAR
SPHERICAL CONFIGURATION
ULTRAVIOLET RADIATION
WAVELENGTHS
WIRES
X-RAY RADIOGRAPHY