Search Results - "APRUZESE, John P"

Simulations of Recent Argon Gas-Puff Implosions on Z With Xe and Kr Dopants by Tangri, Varun, Giuliani, John L., Velikovich, Alexander L., Ouart, Nicholas, Dasgupta, Arati, Apruzese, John P., Harvey-Thompson, A. J., Jennings, C. A., Jones, Brent

“…An intriguing result is that a small fraction of Xe (0.8% by number in the center jet) can have a significant impact on the emitted K-shell radiation in an Ar…”
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Theory of High-Energy-Photon K-Shell Recombination Continuum Radiation From Z-Pinch Plasmas by Velikovich, Alexander L, Apruzese, John P, Davis, Jack, Thornhill, J Ward

“…This paper presents explicit analytical formulas relating the X-ray yields in various energy bins of the free-bound recombination continuum to the mass,…”
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Two-Dimensional Radiation MHD K-Shell Modeling of Stainless-Steel Double-Wire-Array Experiments on the Refurbished Z Machine by Thornhill, J Ward, Giuliani, John L, Dasgupta, Arati, Apruzese, John P, Davis, Jack, Chong, Young K, Jennings, Christopher A, Ampleford, Dave A, Jones, Brent, Coverdale, Christine A, Jones, M C, Cuneo, Michael E, Stygar, W A

“…Two-dimensional ( r , z ) magnetohydrodynamic simulations with nonlocal thermodynamic equilibrium ionization and radiation transport are used to investigate…”
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Two- and three-wire loads for large current machines by Terry, R.E., Apruzese, J.P.

“…Energetic implosions, using two or three load wires to create a focused axial stagnation of dense wire cores amidst the assembled precursor plasma, are…”
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Radiation Transport in Z-Pinches by Apruzese, John P., Giuliani, John L.

“…Z-pinches, formed by passing large currents through wires or gas puffs, are the most powerful and energetic laboratory sources of X-rays. As higher current…”
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A Renewed Capability for Gas Puff Science on Sandia's Z Machine by Jones, Brent, Jennings, Christopher A., Lamppa, Derek C., Hansen, Stephanie B., Harvey-Thompson, Adam J., Ampleford, David J., Cuneo, Michael E., Strizic, Thomas, Johnson, Drew, Jones, Michael C., Moore, Nathan W., Flanagan, Timothy M., McKenney, John L., Waisman, Eduardo M., Coverdale, Christine A., Krishnan, Mahadevan, Coleman, Philip L., Elliott, Kristi Wilson, Madden, Robert E., Thompson, John, Bixler, Alex, Thornhill, J. Ward, Giuliani, John L., Chong, Young K., Velikovich, Alexander L., Dasgupta, Arati, Apruzese, John P.

“…A comprehensive gas puff capability is being developed on the Z pulsed power generator. We describe the methodology employed for developing a gas puff load on…”
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2-D RMHD Modeling Assessment of Current Flow, Plasma Conditions, and Doppler Effects in Recent Z Argon Experiments by Thornhill, J. Ward, Giuliani, John L., Jones, Brent, Apruzese, John P., Dasgupta, Arati, Chong, Young K., Harvey-Thompson, Adam J., Ampleford, David J., Hansen, Stephanie B., Coverdale, Christine A., Jennings, Christopher A., Rochau, Gregory A., Cuneo, Michael E., Lamppa, Derek C., Johnson, Drew, Jones, Michael C., Moore, Nathan W., Waisman, Eduardo M., Krishnan, Mahadevan, Coleman, Philip L.

“…By varying current-loss circuit parameters, the Mach2-tabular collisional radiative equilibrium 2-D radiation magnetohydrodynamic model was tuned to reproduce…”
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Wire-Array Z-Pinch Length Variations for K-Shell X-Ray Generation on Z by Jones, Brent, Ampleford, David J., Jennings, Christopher A., Waisman, Eduardo M., Hansen, Stephanie B., Coverdale, Christine A., Cuneo, Michael E., Apruzese, John P., Thornhill, J. Ward, Giuliani, John L., Dasgupta, Arati, Clark, Robert W., Davis, Jack

“…In developing stainless-steel (SS) and copper wire-array X-ray sources on the Z machine, we consider the optimization of K-shell yield as a function of load…”
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Theory of High-Energy-Photon K-Shell Recombination Continuum Radiation From 2-Pinch Plasmas: SPECIAL ISSUE ON Z-PINCH PLASMAS 2010 by VELIKOVICH, Alexander L, APRUZESE, John P, DAVIS, Jack, THORNHILL, J. Ward

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Two-Dimensional Radiation MHD K-Shell Modeling of Stainless-Steel Double-Wire-Array Experiments on the Refurbished Z Machine: SPECIAL ISSUE ON Z-PINCH PLASMAS 2010 by THORNHILL, J. Ward, GIULIANI, John L, JONES, M. C, CUNEO, Michael E, STYGAR, W. A, DASGUPTA, Arati, APRUZESE, John P, DAVIS, Jack, CHONG, Young K, JENNINGS, Christopher A, AMPLEFORD, Dave A, JONES, Brent, COVERDALE, Christine A

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Assessing the ZR Machine's Potential for Producing Multi-keV X-Ray Yields in K-Shell Line and Free-Bound Continuum Radiation by Thornhill, J.W., Velikovich, A.L., Clark, R.W., Apruzese, J.P., Davis, J., Whitney, K.G., Coleman, P.L., Coverdale, C.A., Deeney, C., Jones, B.M., LePell, P.D.

“…This paper presents theoretical extrapolations for the multi-keV X-ray radiation production capability of the 26-MA ZR accelerator at Sandia National…”
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The effect of adding a center jet to Argon gas puff implosions at the Z facility by Harvey-Thompson, A. J., Jones, B., Jennings, C. A., Ampleford, D. J., Lamppa, D. C., Hansen, S. B., Coverdale, C. A., Gomez, M. R., Rochau, G. A., Johnson, D., Jones, M. C., Moore, N. W., Flanagan, T., Reneker, J., Jobe, M., Lucero, L., Cuneo, M. E., Thornhill, J. W., Giuliani, J. L., Dasgupta, A.

“…Argon gas puff implosions have been found to be an extremely efficient source of K-shell x-rays (3-4 keV) on the Z pulsed power facility at Sandia National…”
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Argon gas-puff radius optimization for Saturn operating in the long-pulse mode by Mosher, David, Apruzese, John P, Commisso, Robert J, Jackson, Stuart L, Weber, Bruce V

“…Argon gas puff experiments using the long pulse mode of Saturn (230-ns rise time) have promise to increase the coupled energy and simplify operations because…”
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An analysis of Intense Pulsed Active Detection (IPAD) for the detection of special nuclear materials by Swanekamp, S. B., Apruzese, J. P., Commisso, R. J., Mosher, D., Schumer, J. W.

“…This paper analyzes the Intense Pulsed Active Detection (IPAD) approach for active detection of fissile material, highlights some of its merits, and compares…”
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Measurement and Analysis of Continuum Radiation From a Large-Diameter Long Implosion Time Argon Gas Puff Z-Pinch at 6 MA by Young, F.C., Commisso, R.J., Murphy, D.P., Apruzese, J.P., Mosher, D., Velikovich, A.L., Coleman, P.L., Banister, J.W., Failor, B.H., Levine, J.S., Qi, N., Sze, H.M.

“…Time-resolved measurements of the absolute free-bound (FB) continuum spectrum emitted from a 12-cm-diameter argon gas-puff Z -pinch driven at sim!!6 -MA peak…”
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Assessing the ZR Machine's potential for producing multi-keV X-ray yields in K-shell line and free-bound continuum radiation: Special issue on Z-pinch plasmas by THORNHILL, J. Ward, VELIKOVICH, Alexander L, LEPELL, P. David, CLARK, Robert W, APRUZESE, John P, DAVIS, Jack, WHITNEY, Kenneth G, COLEMAN, Philip L, COVERDALE, Christine A, DEENEY, Christopher, JONES, Brent M

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Measurement and analysis of continuum radiation from a large-diameter long implosion time argon gas puff Z-pinch at 6 MA: Special issue on Z-pinch plasmas by YOUNG, F. C, COMMISSO, Robert J, QI, N, SZE, H. M, MURPHY, D. P, APRUZESE, John P, MOSHER, David, VELIKOVICH, Alexander L, COLEMAN, Philip L, BANISTER, J. W, FAILOR, B. H, LEVINE, J. S

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Survey of design points for low wire count PRS loads by Terry, R.E., Apruzese, J.P.

“…Summary form only given. Plasma radiation source (PRS) loads of a few larger diameter wires offer a relatively unexplored path to energetic implosions. Such…”
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Development of an 85KJ stainless steel K-shell X-ray source on the Z generator by Ampleford, D J, Jones, B, Coverdale, C A, Nash, T J, Jones, S C, Jones, M C, Stygar, W A, Savage, M E, LeChien, K R, Jennings, C A, Hansen, S B, Cuneo, M E, Thornhill, J W, Giuliani, J L, Apruzese, J P, Clark, R W, Chong, Y K, Dasgupta, A

“…We will discuss experiments on the Z generator using large diameter stainless steel wire arrays to produce K-shell emission (hv~6.7keV). Large array diameters…”
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Two-dimensional model of a large area, inductively coupled, retangular plasma source for chemical vapor deposition by Giuliani, John L, Shamamian, Vasgen A, Thomas, Raymond E, Apruzese, John P

“…A novel design for an inductively coupled, rectangular plasma source is described…”
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