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Your search keyword '"Fedin, D. A."' showing total 4 results
Start Over Author "Fedin, D. A." Journal aip conference proceedings
4 results on '"Fedin, D. A."'

1. Implosion Dynamics in Conical Wire Array Z-pinches.

Author

Ampleford, D. J., Lebedev, S. V., Chittenden, J. P., Bland, S. N., Bott, S. C., Hall, G. N., Palmer, J. B. A., Rapley, J., Kantsyrev, V. L., Safronova, A. S., Ivanov, V. V., Fedin, D. A., Laca, P. J., Sotnikov, V. I., Yilmaz, F., Ouart, N., Nalajala, V., Shrestha, I., Pokala, S., and Jones, B.

Subjects
WIRE, PINCH effect (Physics), DYNAMICS, CATHODES, PHYSICS
Abstract

We present initial results from imploding conical wire array experiments performed on both the MAGPIE generator (1MA, 240ns) at Imperial College London and the Nevada Terawatt Facility’s Zebra generator (1MA, 100ns) at University of Nevada, Reno. This paper will discuss the implosion dynamics of conical wire arrays, including initial implosion of the cathode end of the array and the formation of a magnetic bubble. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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2. Dynamics of Copper Wire Arrays at 1 MA and 20 MA Generators.

Author

Coverdale, C. A., Jones, B., LePell, P. D., Deeney, C., Safronova, A. S., Kantsyrev, V. L., Fedin, D., Ouart, N., Ivanov, V., Chittenden, J., Nalajala, V., Pokala, S., and Shrestha, I.

Subjects
COPPER wire, RADIATION, SPECTRUM analysis, WIRE, ELECTRIC generators, PLASMA gases, PLASMA dynamics
Abstract

Experiments to study the implosion dynamics and radiation characteristics of copper z-pinches have been fielded at the 1 MA Zebra facility and the 20 MA Z facility. The impact of initial load mass, initial load diameter, and nesting of wire arrays on the precursor and the stagnated plasma has been evaluated through spectroscopy, shadowgraphy, and fluence measurements. Plasma parameters extracted from modeling of the time-integrated L-shell spectra indicate the presence of more than one plasma source contributing to the radiation, likely due to non-uniform hot spot x-ray emission or temporal gradients. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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3. Radiative Properties, Structure, and Dynamics of Asymmetric and Symmetric, Uniform and Combined X-Pinches on 1MA Zebra Generator.

Author

Kantsyrev, V., Safronova, A., Fedin, D., Ivanov, V., Esaulov, A., Nalajala, V., Shrestha, I., Pokala, S., Ouart, N., Yilmaz, F., Hoppe, T., Laca, P., Astanovitsky, A., Batie, S., LeGalloudec, B., Cowan, T., Sarkisov, G., and Gradel, J.

Subjects
PINCH effect (Physics), ELECTRIC currents, MAGNETIC fields, PLASMA gases, PLASMA dynamics, X-rays
Abstract

Experimental results of studies of the 1MA symmetric and asymmetric, uniform stainless steel, Cu, Mo, combined Al/Mo, Mo/Al, Al/W, W/Al, and Mo/W X-pinches are presented. Implosions of X-pinches are studied by spatially-resolved and time-gated x-ray imaging, spectroscopy, and laser probing diagnostics. New data for the total radiation yield are obtained. The planar-shape structures of X-pinch plasma and the corresponding electron beam is observed for the most of X-pinches. The effects of generation of hot spots along original wires positions that are cooler than that from the cross-wire region and arc structures from hot spots between wires are found for X-pinches composed from Al, Cu and W wires. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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