Search Results - "COVERDALE, C. A"

Spectroscopic diagnosis of nested-wire-array dynamics and interpenetration at 7 MA by DEENEY, C, APRUZESE, J. P, COVERDALE, C. A, WHITNEY, K. G, THORNHILL, J. W, DAVIS, J

“…Nested-wire array experiments have been conducted at the 7 MA level with 150 ns implosion times from an outer diameter of 40 mm. Analysis of spectral data…”
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Optimal wire-number range for high x-ray power in long-implosion-time aluminum Z pinches by Coverdale, C A, Deeney, C, Douglas, M R, Apruzese, J P, Whitney, K G, Thornhill, J W, Davis, J

“…Experiments performed on the 8-MA Saturn accelerator to investigate the effects of interwire gap spacing on long-implosion-time Z pinches have resulted in the…”
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Pressure and energy balance of stagnating plasmas in z-pinch experiments: implications to current flow at stagnation by Maron, Y, Starobinets, A, Fisher, V I, Kroupp, E, Osin, D, Fisher, A, Deeney, C, Coverdale, C A, Lepell, P D, Yu, E P, Jennings, C, Cuneo, M E, Herrmann, M C, Porter, J L, Mehlhorn, T A, Apruzese, J P

“…Detailed spectroscopic diagnostics of the stagnating plasma in two disparate z pinches allow, for the first time, the examination of the plasma properties…”
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Propagation of intense subpicosecond laser pulses through underdense plasmas by Coverdale, CA, Darrow, CB, Decker, CD, Mori, WB, Tzeng, KC, Marsh, KA, Clayton, CE, Joshi, C

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Planar wire-array Z-pinch implosion dynamics and X-ray scaling at multiple-MA drive currents for a compact multisource hohlraum configuration by Jones, B, Ampleford, D J, Vesey, R A, Cuneo, M E, Coverdale, C A, Waisman, E M, Jones, M C, Fowler, W E, Stygar, W A, Serrano, J D, Vigil, M P, Esaulov, A A, Kantsyrev, V L, Safronova, A S, Williamson, K M, Chuvatin, A S, Rudakov, L I

“…An indirect drive configuration is proposed wherein multiple compact Z-pinch x-ray sources surround a secondary hohlraum. Planar compact wire arrays allow…”
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Dynamics of mass transport and magnetic fields in low-wire-number-array Z pinches by Ivanov, V V, Sotnikov, V I, Sarkisov, G S, Cowan, T E, Bland, S N, Jones, B, Coverdale, C A, Deeney, C, Laca, P J, Astanovitskiy, A L, Haboub, A

“…The dynamics of mass transport were observed in a wire array implosion with multiframe laser probing. Plasma bubbles arise at breaks in the wires…”
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Observation of >400-eV precursor plasmas from low-wire-number copper arrays at the 1-MA zebra facility by Coverdale, C A, Safronova, A S, Kantsyrev, V L, Ouart, N D, Esaulov, A A, Deeney, C, Williamson, K M, Osborne, G C, Shrestha, I, Ampleford, D J, Jones, B

“…Experiments with cylindrical copper wire arrays at the 1-MA Zebra facility show that high temperatures exist in the precursor plasmas formed when ablated wire…”
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Characterization of Fine Metallic Wires for Wire-Array Z-Pinch Experiments by Killebrew, K. L., Maurer, A. J., Ampleford, D. J., Coverdale, C. A., Schroen, D., Holt, R. R., Rochau, G. A., Bailey, J. E., Jones, B., Savage, M. E., Graham, D. A.

“…The Z Facility at Sandia National Laboratories can produce >;2 MJ of X-ray energy with peak powers >;280 TW. Achieving optimal load performance requires the…”
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Stagnation and Disruption of Wire Array Z-Pinch Radiation Sources on the Z Pulsed Power Generator by Jones, B., Ampleford, D. J., Nielsen, D. S., Coverdale, C. A., Jennings, C. A., Cuneo, M. E.

“…Magnetic implosions provide extremely intense soft X-ray radiation on the Z accelerator. Shock heating at stagnation provides temperatures that are capable of…”
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K-shell radiation from nickel wire arrays at 18 MA by Sze, H.M., Levine, J.S., Banister, J.W., Coleman, P.L., Failor, B.H., Song, Y., Apruzese, J.P., Davis, J., Coverdale, C.A., Deeney, C., Bell, D.

“…A series of nickel z pinch experiments was conducted at 18 MA current on the Z accelerator producing up to 13 kJ of K-shell radiation at 7.8 keV and above…”
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Measurement of temperature, density, and particle transport with localized dopants in wire-array Z pinches by Jones, B, Deeney, C, McKenney, J L, Ampleford, D J, Coverdale, C A, Lepell, P D, Shelton, K P, Safronova, A S, Kantsyrev, V L, Osborne, G, Sotnikov, V I, Ivanov, V V, Fedin, D, Nalajala, V, Yilmaz, F, Shrestha, I

“…Axially localized NaF dopants are coated onto Al cylindrical wire arrays in order to act as spectroscopic tracers in the stagnated z-pinch plasma…”
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K-shell radiation physics in low- to moderate-atomic-number z-pinch plasmas on the Z accelerator by Jones, B., Deeney, C., Coverdale, C.A., LePell, P.D., McKenney, J.L., Apruzese, J.P., Thornhill, J.W., Whitney, K.G., Clark, R.W., Velikovich, A.L., Davis, J., Maron, Y., Kantsyrev, V., Safronova, A., Oreshkin, V.I.

“…Dense z-pinches produced by 100 ns implosions of wire arrays or gas puffs produce substantial soft X-ray power. One class of z-pinch radiation sources includes…”
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Radiation properties and implosion dynamics of planar and cylindrical wire arrays, asymmetric and symmetric, uniform and combined X-pinches on the UNR 1-MA zebra generator by Kantsyrev, V.L., Safronova, A.S., Fedin, D.A., Ivanov, V.V., Esaulov, A.A., Nalajala, V., Shrestha, I., Pokala, S., Williamson, K., Ouart, N.D., Yilmaz, M.F., Laca, P., Cowan, T.E., Rudakov, L.I., Jones, B., Coverdale, C.A., Deeney, C., LePell, P.D., Velikovich, A.L., Chuvatin, A.S.

“…In the following experiments, we studied implosions of different wire arrays and X-pinches produced on the 1-MA Zebra generator at the University of Nevada,…”
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Scaling of K-Shell Emission From Z -Pinches: Z to ZR by Coverdale, C.A., Deeney, C., Jones, B., Thornhill, J.W., Whitney, K.G., Velikovich, A.L., Clark, R.W., Chong, Y.K., Apruzese, J.P., Davis, J., LePell, P.D.Y.

“…Experiments in the last few years at the 20-MA Z Accelerator have produced significant K-shell X-ray output from a variety of initial load materials, including…”
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Double and single planar wire arrays at high and low impedance university-scale generators by Safronova, A. S., Kantsyrev, V. L., Weller, M. E., Shlyaptseva, V. V., Shrestha, I., Stafford, A., Lorance, M., Cooper, M., Patel, S. G., Steiner, A. M., Yager-Elorriaga, D. A., Jordan, N. M., Gilgenbach, R. M., Coverdale, C. A., Jones, B., Williamson, K. M., Chuvatin, A. S.

“…Single Planar Wire Arrays (SPWA) and Double Planar Wire Arrays (DPWA), which consist of one or two parallel rows of wires, respectively, have demonstrated high…”
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Monochromatic X-ray self-emission imaging of imploding wire array Z-pinches on the Z accelerator by Jones, B., Deeney, C., Coverdale, C.A., Meyer, C.J., LePell, P.D.

“…A monochromatic X-ray self-emission imaging diagnostic has been developed for the Z accelerator, which drives 20 MA in 100 ns to implode wire array Z-pinches,…”
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Spectroscopic modeling of radiation from Cu and Mo X-pinches produced on the UNR 1 MA Zebra generator by Safronova, A.S., Kantsyrev, V.L., Ouart, N., Yilmaz, F., Fedin, D., Astanovitsky, A., LeGalloudec, B., Batie, S., Brown, D., Nalajala, V., Pokala, S., Shrestha, I., Cowan, T.E., Jones, B., Coverdale, C.A., Deeney, C., Hansen, S.B., LePell, P.D., Jobe, D., Nielson, D.

“…X-pinches are a source for studying radiative properties of plasmas of very small sizes, high densities and temperatures applicable to high-energy density…”
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Doppler measurement of implosion velocity in fast Z-pinch x-ray sources by Jones, B, Jennings, C A, Bailey, J E, Rochau, G A, Maron, Y, Coverdale, C A, Yu, E P, Hansen, S B, Ampleford, D J, Lake, P W, Dunham, G, Cuneo, M E, Deeney, C, Fisher, D V, Fisher, V I, Bernshtam, V, Starobinets, A, Weingarten, L

“…The observation of Doppler splitting in K-shell x-ray lines emitted from optically thin dopants is used to infer implosion velocities of up to 70 cm/μs in…”
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Radiative properties of asymmetric and symmetric X-pinches with two and four wires recently produced on the UNR 1 MA Zebra generator by Kantsyrev, V., Safronova, A., Ivanov, V., Fedin, D., Mancini, R., Astanovitsky, A., LeGalloudec, B., Batie, S., Brown, D., Nalajala, V., Shrestha, I., Pokala, S., Ouart, N., Yilmaz, F., Clinton, A., Johnson, M., Cowan, T., Jones, B., Coverdale, C.A., Deeney, C., LePell, P.D., Jobe, D., Nielson, D.

“…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…”
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Mid-Atomic-Number Cylindrical Wire Array Precursor Plasma Studies on Zebra by Stafford, Austin, Safronova, Alla S., Kantsyrev, Victor L., Weller, Michael E., Shrestha, Ishor, Shlyaptseva, Veronica V., Coverdale, Christine A., Chuvatin, Alexander S.

“…Precursor plasmas from low wire number cylindrical wire arrays (CWAs) were previously shown to radiate at temperatures >300 eV for Ni-60 (94% Cu and 6% Ni)…”
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