Search Results - "WAISMAN, E. M"

Experimental study of current loss and plasma formation in the Z machine post-hole convolute by Gomez, M. R., Gilgenbach, R. M., Cuneo, M. E., Jennings, C. A., McBride, R. D., Waisman, E. M., Hutsel, B. T., Stygar, W. A., Rose, D. V., Maron, Y.

“…The Z pulsed-power generator at Sandia National Laboratories drives high energy density physics experiments with load currents of up to 26 MA. Z utilizes a…”
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Pulsed power accelerator for material physics experiments by Reisman, D. B., Stoltzfus, B. S., Stygar, W. A., Austin, K. N., Waisman, E. M., Hickman, R. J., Davis, J.-P., Haill, T. A., Knudson, M. D., Seagle, C. T., Brown, J. L., Goerz, D. A., Spielman, R. B., Goldlust, J. A., Cravey, W. R.

“…We have developed the design of Thor: a pulsed power accelerator that delivers a precisely shaped current pulse with a peak value as high as 7 MA to a…”
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Transmission-line-circuit model of an 85-TW, 25-MA pulsed-power accelerator by Hutsel, B. T., Corcoran, P. A., Cuneo, M. E., Gomez, M. R., Hess, M. H., Hinshelwood, D. D., Jennings, C. A., Laity, G. R., Lamppa, D. C., McBride, R. D., Moore, J. K., Myers, A., Rose, D. V., Slutz, S. A., Stygar, W. A., Waisman, E. M., Welch, D. R., Whitney, B. A.

“…We have developed a physics-based transmission-line-circuit model of the Z pulsed-power accelerator. The 33-m-diameter Z machine generates a peak electrical…”
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Numerical simulations of enhanced ion current losses in the inner magnetically insulated transmission line of the Z accelerator by Rose, D. V., Waisman, E. M., Desjarlais, M. P., Cuneo, M. E., Hutsel, B. T., Welch, D. R., Bennett, N., Laity, G. R.

“…Two-dimensional electromagnetic (EM) particle-in-cell (PIC) simulations of a radial magnetically-insulated-transmission-line are presented and compared to the…”
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Voltage measurements at the vacuum post-hole convolute of the Z pulsed-power accelerator by Waisman, E. M., McBride, R. D., Cuneo, M. E., Wenger, D. F., Fowler, W. E., Johnson, W. A., Basilio, L. I., Coats, R. S., Jennings, C. A., Sinars, D. B., Vesey, R. A., Jones, B., Ampleford, D. J., Lemke, R. W., Martin, M. R., Schrafel, P. C., Lewis, S. A., Moore, J. K., Savage, M. E., Stygar, W. A.

“…Presented are voltage measurements taken near the load region on the Z pulsed-power accelerator using an inductive voltage monitor (IVM). Specifically, the IVM…”
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Displacement current phenomena in the magnetically insulated transmission lines of the refurbished Z accelerator by McBride, R. D., Jennings, C. A., Vesey, R. A., Rochau, G. A., Savage, M. E., Stygar, W. A., Cuneo, M. E., Sinars, D. B., Jones, M., LeChien, K. R., Lopez, M. R., Moore, J. K., Struve, K. W., Wagoner, T. C., Waisman, E. M.

“…Experimental data is presented that illustrates important displacement current phenomena in the magnetically insulated transmission lines (MITLs) of the…”
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Direct experimental evidence for current-transfer mode operation of nested tungsten wire arrays at 16-19 MA by CUNEO, M. E, SINARS, D. B, BLISS, D. E, WAISMAN, E. M, PORTER, J. L, STYGAR, W. A, LEBEDEV, S. V, CHITTENDEN, J. P, SARKISOV, G. S, AFEYAN, B. B

“…Nested tungsten wire arrays (20-mm on 12-mm diam.) are shown for the first time to operate in a current-transfer mode at 16-19 MA, even for azimuthal interwire…”
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Energy loss to conductors operated at lineal current densities ≤ 10     MA / cm : Semianalytic model, magnetohydrodynamic simulations, and experiment by Stygar, W. A., Rosenthal, S. E., Ives, H. C., Wagoner, T. C., Allshouse, G. O., Androlewicz, K. E., Donovan, G. L., Fehl, D. L., Frese, M. H., Gilliland, T. L., Johnson, M. F., Mills, J. A., Reisman, D. B., Reynolds, P. G., Speas, C. S., Spielman, R. B., Struve, K. W., Toor, A., Waisman, E. M.

“…We have developed a semianalytic expression for the total energy loss to a vacuum transmission-line electrode operated at high lineal current densities. (We…”
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Demonstration of radiation pulse shaping with nested-tungsten-wire-array Z pinches for high-yield inertial confinement fusion by CUNEO, M. E, VESEY, R. A, SCHROEN, D. G, MAZARAKIS, M. G, CHANDLER, G. A, MEHLHORN, T. A, SINARS, D. B, CHITTENDEN, J. P, WAISMAN, E. M, LEMKE, R. W, LEBEDEV, S. V, BLISS, D. E, STYGAR, W. A, PORTER, J. L

“…Nested wire-array Z pinches are shown to generate soft x-ray radiation pulse shapes required for three-shock isentropic compression and hot-spot ignition of…”
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Suppression of the ablation phase in wire array Z pinches using a tailored current prepulse by Harvey-Thompson, A J, Lebedev, S V, Burdiak, G, Waisman, E M, Hall, G N, Suzuki-Vidal, F, Bland, S N, Chittenden, J P, De Grouchy, P, Khoory, E, Pickworth, L, Skidmore, J, Swadling, G

“…A new wire array configuration has been used to create thin shell-like implosions in a cylindrical array. The setup introduces a ~5 kA, ~25 ns current prepulse…”
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Circuit Model for Driving Three-Dimensional Resistive MHD Wire Array Z -Pinch Calculations by Jennings, Chris A, Chittenden, Jeremy P, Cuneo, Michael E, Stygar, W A, Ampleford, David J, Waisman, E M, Jones, M, Savage, M E, LeChien, K R, Wagoner, T C

“…Compact tungsten wire array Z -pinches imploded on the Z generator at Sandia National Laboratories have proven to be a powerful reproducible X-ray source. Wire…”
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Radiation energetics of ICF-relevant wire-array Z pinches by Sinars, D B, Lemke, R W, Cuneo, M E, Lebedev, S V, Waisman, E M, Stygar, W A, Jones, B, Jones, M C, Yu, E P, Porter, J L, Wenger, D F

“…Short-implosion-time 20-mm diameter, 300-wire tungsten arrays maintain high peak x-ray powers despite a reduction in peak current from 19 to 13 MA. The main…”
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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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Effects of mass ablation on the scaling of X-ray power with current in wire-array Z pinches by Lemke, R W, Sinars, D B, Waisman, E M, Cuneo, M E, Yu, E P, Haill, T A, Hanshaw, H L, Brunner, T A, Jennings, C A, Stygar, W A, Desjarlais, M P, Mehlhorn, T A, Porter, J L

“…X-ray production by imploding wire-array Z pinches is studied using radiation magnetohydrodynamics simulation. It is found that the density distribution…”
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Conceptual design of a 10^{13}-W pulsed-power accelerator for megajoule-class dynamic-material-physics experiments by W. A. Stygar, D. B. Reisman, B. S. Stoltzfus, K. N. Austin, T. Ao, J. F. Benage, E. W. Breden, R. A. Cooper, M. E. Cuneo, J.-P. Davis, J. B. Ennis, P. D. Gard, G. W. Greiser, F. R. Gruner, T. A. Haill, B. T. Hutsel, P. A. Jones, K. R. LeChien, J. J. Leckbee, S. A. Lewis, D. J. Lucero, G. R. McKee, J. K. Moore, T. D. Mulville, D. J. Muron, S. Root, M. E. Savage, M. E. Sceiford, R. B. Spielman, E. M. Waisman, M. L. Wisher

“…We have developed a conceptual design of a next-generation pulsed-power accelerator that is optimized for megajoule-class dynamic-material-physics experiments…”
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Demonstration of Radiation Pulse-Shaping Capabilities Using Nested Conical Wire-Array Z-Pinches by Ampleford, D. J., Bland, S. N., Cuneo, M. E., Lebedev, S. V., Sinars, D. B., Jennings, C. A., Waisman, E. M., Vesey, R. A., Hall, G. N., Suzuki-Vidal, F., Chittenden, J. P., Bott, S. C.

“…We present data from experiments using nested wire-array Z -pinches where the wires of one of the arrays (the outer or inner array) are inclined to produce a…”
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Theoretical z -pinch scaling relations for thermonuclear-fusion experiments by Stygar, W A, Cuneo, M E, Vesey, R A, Ives, H C, Mazarakis, M G, Chandler, G A, Fehl, D L, Leeper, R J, Matzen, M K, McDaniel, D H, McGurn, J S, McKenney, J L, Muron, D J, Olson, C L, Porter, J L, Ramirez, J J, Seamen, J F, Speas, C S, Spielman, R B, Struve, K W, Torres, J A, Waisman, E M, Wagoner, T C, Gilliland, T L

“…We have developed wire-array z -pinch scaling relations for plasma-physics and inertial-confinement-fusion (ICF) experiments. The relations can be applied to…”
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Conceptual design of a 10 13 -W pulsed-power accelerator for megajoule-class dynamic-material-physics experiments by Stygar, W. A., Reisman, D. B., Stoltzfus, B. S., Austin, K. N., Ao, T., Benage, J. F., Breden, E. W., Cooper, R. A., Cuneo, M. E., Davis, J.-P., Ennis, J. B., Gard, P. D., Greiser, G. W., Gruner, F. R., Haill, T. A., Hutsel, B. T., Jones, P. A., LeChien, K. R., Leckbee, J. J., Lewis, S. A., Lucero, D. J., McKee, G. R., Moore, J. K., Mulville, T. D., Muron, D. J., Root, S., Savage, M. E., Sceiford, M. E., Spielman, R. B., Waisman, E. M., Wisher, M. L.

“…In this study, we have developed a conceptual design of a next-generation pulsed-power accelerator that is optmized for driving megajoule-class…”
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Characteristics and scaling of tungsten-wire-array z -pinch implosion dynamics at 20 MA by Cuneo, M E, Waisman, E M, Lebedev, S V, Chittenden, J P, Stygar, W A, Chandler, G A, Vesey, R A, Yu, E P, Nash, T J, Bliss, D E, Sarkisov, G S, Wagoner, T C, Bennett, G R, Sinars, D B, Porter, J L, Simpson, W W, Ruggles, L E, Wenger, D F, Garasi, C J, Oliver, B V, Aragon, R A, Fowler, W E, Hettrick, M C, Idzorek, G C, Johnson, D, Keller, K, Lazier, S E, McGurn, J S, Mehlhorn, T A, Moore, T, Nielsen, D S, Pyle, J, Speas, S, Struve, K W, Torres, J A

“…We present observations for 20-MA wire-array z pinches of an extended wire ablation period of 57%+/-3% of the stagnation time of the array and non-thin-shell…”
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Switching of low density diode plasmas by WAISMAN, E. M, STEEN, P. G, PARKS, D. E, WILSON, A

“…The switching action of low density injected carbon plasmas is investigated by a numerical collisionless two-dimensional electromagnetic particle simulation…”
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