Search Results - "Rochau, G."

Performance Scaling in Magnetized Liner Inertial Fusion Experiments by Gomez, M. R., Slutz, S. A., Jennings, C. A., Ampleford, D. J., Weis, M. R., Myers, C. E., Yager-Elorriaga, D. A., Hahn, K. D., Hansen, S. B., Harding, E. C., Harvey-Thompson, A. J., Lamppa, D. C., Mangan, M., Knapp, P. F., Awe, T. J., Chandler, G. A., Cooper, G. W., Fein, J. R., Geissel, M., Glinsky, M. E., Lewis, W. E., Ruiz, C. L., Ruiz, D. E., Savage, M. E., Schmit, P. F., Smith, I. C., Styron, J. D., Porter, J. L., Jones, B., Mattsson, T. R., Peterson, K. J., Rochau, G. A., Sinars, D. B.

“…We present experimental results from the first systematic study of performance scaling with drive parameters for a magnetoinertial fusion concept. In…”
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Experimental demonstration of fusion-relevant conditions in magnetized liner inertial fusion by Gomez, M R, Slutz, S A, Sefkow, A B, Sinars, D B, Hahn, K D, Hansen, S B, Harding, E C, Knapp, P F, Schmit, P F, Jennings, C A, Awe, T J, Geissel, M, Rovang, D C, Chandler, G A, Cooper, G W, Cuneo, M E, Harvey-Thompson, A J, Herrmann, M C, Hess, M H, Johns, O, Lamppa, D C, Martin, M R, McBride, R D, Peterson, K J, Porter, J L, Robertson, G K, Rochau, G A, Ruiz, C L, Savage, M E, Smith, I C, Stygar, W A, Vesey, R A

“…This Letter presents results from the first fully integrated experiments testing the magnetized liner inertial fusion concept [S. A. Slutz et al., Phys…”
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Systematic Study of L-Shell Opacity at Stellar Interior Temperatures by Nagayama, T, Bailey, J E, Loisel, G P, Dunham, G S, Rochau, G A, Blancard, C, Colgan, J, Cossé, Ph, Faussurier, G, Fontes, C J, Gilleron, F, Hansen, S B, Iglesias, C A, Golovkin, I E, Kilcrease, D P, MacFarlane, J J, Mancini, R C, More, R M, Orban, C, Pain, J-C, Sherrill, M E, Wilson, B G

“…The first systematic study of opacity dependence on atomic number at stellar interior temperatures is used to evaluate discrepancies between measured and…”
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A higher-than-predicted measurement of iron opacity at solar interior temperatures by Bailey, J. E., Nagayama, T., Loisel, G. P., Rochau, G. A., Blancard, C., Colgan, J., Cosse, Ph, Faussurier, G., Fontes, C. J., Gilleron, F., Golovkin, I., Hansen, S. B., Iglesias, C. A., Kilcrease, D. P., MacFarlane, J. J., Mancini, R. C., Nahar, S. N., Orban, C., Pain, J.-C., Pradhan, A. K., Sherrill, M., Wilson, B. G.

“…Laboratory measurements of iron opacity made under conditions similar to those inside the Sun reveal much higher opacity than predicted, helping to resolve…”
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Understanding fuel magnetization and mix using secondary nuclear reactions in magneto-inertial fusion by Schmit, P F, Knapp, P F, Hansen, S B, Gomez, M R, Hahn, K D, Sinars, D B, Peterson, K J, Slutz, S A, Sefkow, A B, Awe, T J, Harding, E, Jennings, C A, Chandler, G A, Cooper, G W, Cuneo, M E, Geissel, M, Harvey-Thompson, A J, Herrmann, M C, Hess, M H, Johns, O, Lamppa, D C, Martin, M R, McBride, R D, Porter, J L, Robertson, G K, Rochau, G A, Rovang, D C, Ruiz, C L, Savage, M E, Smith, I C, Stygar, W A, Vesey, R A

“…Magnetizing the fuel in inertial confinement fusion relaxes ignition requirements by reducing thermal conductivity and changing the physics of burn product…”
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Benchmark Experiment for Photoionized Plasma Emission from Accretion-Powered X-Ray Sources by Loisel, G P, Bailey, J E, Liedahl, D A, Fontes, C J, Kallman, T R, Nagayama, T, Hansen, S B, Rochau, G A, Mancini, R C, Lee, R W

“…The interpretation of x-ray spectra emerging from x-ray binaries and active galactic nuclei accreted plasmas relies on complex physical models for radiation…”
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Conceptual designs of two petawatt-class pulsed-power accelerators for high-energy-density-physics experiments by Stygar, W. A., Awe, T. J., Bailey, J. E., Bennett, N. L., Breden, E. W., Campbell, E. M., Clark, R. E., Cooper, R. A., Cuneo, M. E., Ennis, J. B., Fehl, D. L., Genoni, T. C., Gomez, M. R., Greiser, G. W., Gruner, F. R., Herrmann, M. C., Hutsel, B. T., Jennings, C. A., Jobe, D. O., Jones, B. M., Jones, M. C., Jones, P. A., Knapp, P. F., Lash, J. S., LeChien, K. R., Leckbee, J. J., Leeper, R. J., Lewis, S. A., Long, F. W., Lucero, D. J., Madrid, E. A., Martin, M. R., Matzen, M. K., Mazarakis, M. G., McBride, R. D., McKee, G. R., Miller, C. L., Moore, J. K., Mostrom, C. B., Mulville, T. D., Peterson, K. J., Porter, J. L., Reisman, D. B., Rochau, G. A., Rochau, G. E., Rose, D. V., Rovang, D. C., Savage, M. E., Sceiford, M. E., Schmit, P. F., Schneider, R. F., Schwarz, J., Sefkow, A. B., Sinars, D. B., Slutz, S. A., Spielman, R. B., Stoltzfus, B. S., Thoma, C., Vesey, R. A., Wakeland, P. E., Welch, D. R., Wisher, M. L., Woodworth, J. R.

“…We have developed conceptual designs of two petawatt-class pulsed-power accelerators: Z 300 and Z 800. The designs are based on an accelerator architecture…”
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Observations of modified three-dimensional instability structure for imploding z-pinch liners that are premagnetized with an axial field by Awe, T J, McBride, R D, Jennings, C A, Lamppa, D C, Martin, M R, Rovang, D C, Slutz, S A, Cuneo, M E, Owen, A C, Sinars, D B, Tomlinson, K, Gomez, M R, Hansen, S B, Herrmann, M C, McKenney, J L, Nakhleh, C, Robertson, G K, Rochau, G A, Savage, M E, Schroen, D G, Stygar, W A

“…Novel experimental data are reported that reveal helical instability formation on imploding z-pinch liners that are premagnetized with an axial field. Such…”
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LABORATORY MEASUREMENTS OF WHITE DWARF PHOTOSPHERIC SPECTRAL LINES: Hβ by Falcon, Ross E., Rochau, G. A., Bailey, J. E., Gomez, T. A., Montgomery, M. H., Winget, D. E., Nagayama, T.

“…ABSTRACT We spectroscopically measure multiple hydrogen Balmer line profiles from laboratory plasmas to investigate the theoretical line profiles used in white…”
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Magnetically Driven Implosions for Inertial Confinement Fusion at Sandia National Laboratories by Cuneo, M. E., Herrmann, M. C., Sinars, D. B., Slutz, S. A., Stygar, W. A., Vesey, R. A., Sefkow, A. B., Rochau, G. A., Chandler, G. A., Bailey, J. E., Porter, J. L., McBride, R. D., Rovang, D. C., Mazarakis, M. G., Yu, E. P., Lamppa, D. C., Peterson, K. J., Nakhleh, C., Hansen, S. B., Lopez, A. J., Savage, M. E., Jennings, C. A., Martin, M. R., Lemke, R. W., Atherton, B. W., Smith, I. C., Rambo, P. K., Jones, M., Lopez, M. R., Christenson, P. J., Sweeney, M. A., Jones, B., McPherson, L. A., Harding, E., Gomez, M. R., Knapp, P. F., Awe, T. J., Leeper, R. J., Ruiz, C. L., Cooper, G. W., Hahn, K. D., McKenney, J., Owen, A. C., McKee, G. R., Leifeste, G. T., Ampleford, D. J., Waisman, E. M., Harvey-Thompson, A., Kaye, R. J., Hess, M. H., Rosenthal, S. E., Matzen, M. K.

“…High current pulsed-power generators efficiently store and deliver magnetic energy to z-pinch targets. We review applications of magnetically driven implosions…”
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Iron-plasma transmission measurements at temperatures above 150 eV by Bailey, J E, Rochau, G A, Iglesias, C A, Abdallah, Jr, J, Macfarlane, J J, Golovkin, I, Wang, P, Mancini, R C, Lake, P W, Moore, T C, Bump, M, Garcia, O, Mazevet, S

“…Measurements of iron-plasma transmission at 156+/-6 eV electron temperature and 6.9+/-1.7 x 10(21) cm(-3) electron density are reported over the 800-1800 eV…”
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Differential-output B -dot and D -dot monitors for current and voltage measurements on a 20-MA, 3-MV pulsed-power accelerator by Wagoner, T. C., Stygar, W. A., Ives, H. C., Gilliland, T. L., Spielman, R. B., Johnson, M. F., Reynolds, P. G., Moore, J. K., Mourning, R. L., Fehl, D. L., Androlewicz, K. E., Bailey, J. E., Broyles, R. S., Dinwoodie, T. A., Donovan, G. L., Dudley, M. E., Hahn, K. D., Kim, A. A., Lee, J. R., Leeper, R. J., Leifeste, G. T., Melville, J. A., Mills, J. A., Mix, L. P., Moore, W. B. S., Peyton, B. P., Porter, J. L., Rochau, G. A., Rochau, G. E., Savage, M. E., Seamen, J. F., Serrano, J. D., Sharpe, A. W., Shoup, R. W., Slopek, J. S., Speas, C. S., Struve, K. W., Van De Valde, D. M., Woodring, R. M.

“…We have developed a system of differential-output monitors that diagnose current and voltage in the vacuum section of a 20-MA 3-MV pulsed-power accelerator…”
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Radiating shock measurements in the Z-pinch dynamic hohlraum by Rochau, G A, Bailey, J E, Maron, Y, Chandler, G A, Dunham, G S, Fisher, D V, Fisher, V I, Lemke, R W, Macfarlane, J J, Peterson, K J, Schroen, D G, Slutz, S A, Stambulchik, E

“…The Z-pinch dynamic hohlraum is an x-ray source for high energy-density physics studies that is heated by a radiating shock to radiation temperatures >200 eV…”
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Multi-Element Stark Broadening for Diagnosing Electron Density in Hed Plasmas by Lane, T.S., Kozlowski, P.M., Flaugh, M.K., Koepke, M.E., Loisel, G. P., Bailey, J. E., Rochau, G.

“…The interpretation of spectral line shapes for plasma characterization is well established as a diagnostic technique for determining number density and…”
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Increased preheat energy to MagLIF targets with cryogenic cooling by Harvey-Thompson, A. J., Geissel, M., Crabtree, J. A., Weis, M. R., Gomez, M. R., Fein, J. R., Ampleford, D. J., Awe, T. J., Chandler, G. A., Galloway, B. R., Hansen, S. B., Hanson, J., Harding, E. C., Jennings, C. A., Kimmel, M., Knapp, P. F., Lamppa, D. C., Lewis, W. E., Mangan, M. A., Maurer, A., Perea, L., Peterson, K. J., Porter, J. L., Rambo, P. K., Robertson, G. K., Rochau, G. A., Ruiz, D. E., Shores, J. E., Slutz, S. A., Smith, I. C., Speas, C. S., Yager-Elorriaga, D. A., York, A., Paguio, R. R., Smith, G. E.

“…The performance of Magnetized Liner Inertial Fusion (MagLIF) experiments is sensitive to the amount of laser energy coupled to the fuel during the preheat…”
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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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Assessing Magnetized Liner Inertial Fusion Stagnation Conditions and Identifying Trends by Gomez, M. R., Slutz, S. A., Knapp, P. F., Hahn, K. D., Harding, E. C., Ampleford, D. J., Awe, T. J., Geissel, M., Hansen, S. B., Harvey-Thompson, A. J., Jennings, C. A., Myers, C. E., Peterson, K. J., Rochau, G. A., Sinars, D. B., Weis, M. R., Yager-Elorriaga, D. A.

“…Magnetized Liner Inertial Fusion (MagLIF) is a magneto-inertial fusion concept currently being investigated on Sandia's Z facility. In MagLIF an axial magnetic…”
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Fusion–fission hybrids for nuclear waste transmutation: A synergistic step between Gen-IV fission and fusion reactors by Mehlhorn, T.A., Cipiti, B.B., Olson, C.L., Rochau, G.E.

“…Energy demand and GDP per capita are strongly correlated, while public concern over the role of energy in climate change is growing. Nuclear power plants…”
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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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Radiation hydrodynamic simulation of a photoionised plasma experiment at the Z facility by Hall, I. M., Durmaz, T., Mancini, R. C., Bailey, J. E., Rochau, G. A.

“…New, high spectral resolution X-ray observations from astrophysical photoionised plasmas have been recorded in recent years by the Chandra and XMM-Newton…”
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