Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Vidya Nalajala"'
Publikováno v:
IEEE Transactions on Plasma Science. 40:3378-3383
Laser diagnostics at the wavelength of 266 nm with a spatial resolution of 5-8 μm were developed for the investigation of dense Z-pinches at the 1-MA generator. The absorption and refraction in Z-pinch plasma are significantly smaller at the ultravi
Autor:
O. Dmitriev, O. Chalyy, S. D. Altemara, Jerry Chittenden, T. Durmaz, A. L. Astanovitskiy, Roberto Mancini, Daniel Papp, P. Wiewior, Alexander P. Shevelko, A. A. Anderson, V. V. Ivanov, Peter Hakel, Vidya Nalajala
Publikováno v:
High Energy Density Physics. 7:383-390
Absorption spectroscopy was applied to wire-array Z-pinches on the 1 MA pulsed-power Zebra generator at the Nevada Terawatt Facility (NTF). The 50 TW Leopard laser was coupled with the Zebra generator for X-ray backlighting of wire arrays at the abla
Autor:
S. Batie, M.F. Yilmaz, A. Astanovitsky, N.D. Ouart, Ishor Shrestha, W. McDaniel, Alla S. Safronova, B. LeGalloudec, Victor L. Kantsyrev, K.M. Williamson, V. V. Shlyaptseva, Vidya Nalajala, G. C. Osborne
Publikováno v:
High Energy Density Physics. 3:237-241
The radiation from implosions of X-pinches and planar wire arrays, which consist of alloyed Al and Mo wires, on the UNR 1MA ZEBRA generator was studied. Combined, planar-loop X-pinches are good surrogate sources for studying radiative properties of Z
Autor:
A. Haboub, T. Adkins, Christopher Deeney, V. V. Ivanov, D. J. Ampleford, C. J. Meyer, A. L. Velikovich, Alexandre S. Chuvatin, G. C. Osborne, V. V. Shlyaptseva, Vidya Nalajala, Brent Manley Jones, Victor L. Kantsyrev, Alla S. Safronova, Paul David LePell, A. Astanovitsky, Christine Anne Coverdale, K.M. Williamson, N.D. Ouart, W. McDaniel, S. Batie, M.F. Yilmaz, B. LeGalloudec, Ishor Shrestha, Leonid Rudakov
Publikováno v:
High Energy Density Physics. 3:136-142
Planar wire array plasmas created by a 1 MA current discharge provide a novel method to investigate dense plasma dynamics, heating mechanism and radiation properties. This is a strongly inhomogeneous on small scale plasma, which has high resistivity
Autor:
V.I. Sotnikov, B. Le Galloudec, A. L. Astanovitskiy, C. Deeney, Ishor Shrestha, Paul David LePell, G. S. Sarkisov, Brent Manley Jones, Thomas E. Cowan, V.L. Kantsyrev, Vidya Nalajala, Dmitry A. Fedin, Christine Anne Coverdale, P.J. Laca, V. V. Ivanov, Kenneth W. Struve
Publikováno v:
IEEE Transactions on Plasma Science. 34:2247-2255
A Faraday rotation diagnostic was applied for the investigation of magnetic fields in plasma of 1-MA wire arrays and X-pinches. Laser-probing diagnostics at the Zebra generator include a four-channel polarointerferometer and a four-frame shadowgraphy
Autor:
G. C. Osborne, Alexandre S. Chuvatin, S. Pokala, Thomas E. Cowan, N.D. Ouart, P.J. Laca, Victor L. Kantsyrev, D A Fedin, M.F. Yilmaz, K.M. Williamson, A. L. Velikovich, Andrey Esaulov, Alla S. Safronova, Leonid Rudakov, V. V. Ivanov, Ishor Shrestha, Vidya Nalajala
Publikováno v:
IEEE Transactions on Plasma Science. 34:2295-2302
The radiative performance of Al, Ni, and W planar wire arrays, to which little energy could be coupled via the conventional magnetic-to-kinetic conversion mechanism, is investigated. However, the planar wire arrays were shown to radiate much more ene
Autor:
T. Hoppe, Vidya Nalajala, Ryan D. McBride, V.L. Kantsyrev, David Hammer, J.D. Douglass, D A Fedin, M.F. Yilmaz, Alla S. Safronova, L.M. Maxson, M. D. Mitchell, G. C. Osborne
Publikováno v:
IEEE Transactions on Plasma Science. 34:2256-2262
Experiments with X-pinches made with both Mo and W wires have been performed on 1-MA pulsed power generators at Cornell University and University of Nevada, Reno. X-ray images and spectra have been studied and compared for three different configurati
Autor:
G. C. Osborne, A. L. Velikovich, John Greenly, V.L. Kantsyrev, Ryan D. McBride, J. D. Douglass, K. Williamson, Alla S. Safronova, David Hammer, L.M. Maxson, Andrey Esaulov, N.D. Ouart, Vidya Nalajala, Dmitry A. Fedin, M.F. Yilmaz
Publikováno v:
IEEE Transactions on Plasma Science. 34:2288-2294
Implosion characteristics of cylindrical arrays of aluminum (Al) or tungsten (W) wires with low number of wires were studied on the 1-MA 100-150-ns current rise time COBRA generator at Cornell University using X-ray/extreme ultraviolet detectors, tim
Spectroscopic modeling of radiation from Cu and Mo X-pinches produced on the UNR 1MA Zebra generator
Autor:
Victor L. Kantsyrev, Stephanie Hansen, S. Batie, Christopher Deeney, S. Pokala, Paul David LePell, B. LeGalloudec, A. Astanovitsky, Ishor Shrestha, F. Yilmaz, Brent Manley Jones, Vidya Nalajala, Christine Anne Coverdale, D. O. Jobe, Alla S. Safronova, Dmitry A. Fedin, D. Brown, Thomas E. Cowan, N.D. Ouart, D. Nielson
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 99:560-571
X-pinches are a source for studying radiative properties of plasmas of very small sizes, high densities and temperatures applicable to high-energy density plasmas such as dense Z-pinches. Recently, spatially resolved and spatially integrated X-ray sp
Autor:
Christopher Deeney, Thomas E. Cowan, N.D. Ouart, F. Yilmaz, A. Astanovitsky, M. Johnson, S. Pokala, D. O. Jobe, S. Batie, Christine Anne Coverdale, A. Clinton, D. Nielson, Roberto Mancini, Vidya Nalajala, Victor L. Kantsyrev, Paul David LePell, Alla S. Safronova, V. V. Ivanov, B. LeGalloudec, D. Brown, Brent Manley Jones, Dmitry A. Fedin, Ishor Shrestha
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 99:349-362
Experimental results of studies of the 1 MA X-pinch X-ray source in a wide spectral region are overviewed. Implosion dynamics and radiative properties of various X-pinches were studied by spatially and time-resolved X-ray and optical diagnostics. In