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Physics of Plasmas
Sinars, Daniel S. ; Yu, Edmund Y. ; Herrmann, Mark H. ; Cuneo, M.E. ; Slutz, Stephen A. ; Smith, Ian C. ; Atherton, B.W. ; Knudson, Marcus D. ; Nakhleh, Charles N.
This paper explores the role of electro-thermal instabilities on the dynamics of magnetically accelerated implosion systems. Electro-thermal instabilities result from non-uniform heating due to temperature dependence in the conductivity of a material. Comparatively little is known about these types of instabilities compared to the well known Magneto-Rayleigh-Taylor (MRT) instability. We present simulations that show electrothermal instabilities form immediately after the surface material of a conductor melts and can act as a significant seed to subsequent MRT instability growth. We also present the results of several experiments performed on Sandia National Laboratories Z accelerator to investigate signatures of electrothermal instability growth on well characterized initially solid aluminum and copper rods driven with a 20 MA, 100 ns risetime current pulse. These experiments show excellent agreement with electrothermal instability simulations and exhibit larger instability growth than can be explained by MRT theory alone. © 2012 American Institute of Physics.
Sinars, Daniel S. ; Jobe, Marc R. ; Lamppa, Derek C. ; Martin, Matthew ; Nakhleh, Charles N. ; Owen, Albert C. ; Mckenney, John M. ; McBride, Ryan D. ; Rovang, Dean C. ; Sefkow, Adam B. ; Slutz, Stephen A. ; Lemke, Raymond W. ; Cuneo, M.E. ; Herrmann, Mark H. ; Jennings, Christopher A.
Slutz, Stephen A.
Proposed for publication in 5th Special Issue of the IEEE Transactions on Plasma Science Z-Pinch Plasmas.
Cuneo, M.E. ; Mazarakis, Michael G. ; Lamppa, Derek C. ; Kaye, Ronald J. ; Nakhleh, Charles N. ; Bailey, James E. ; Hansen, Stephanie B. ; McBride, Ryan D. ; Herrmann, Mark H. ; Lopez, A. ; Peterson, Kyle J. ; Ampleford, David A. ; Jones, Michael J. ; Savage, Mark E. ; Jennings, Christopher A. ; Martin, Matthew ; Slutz, Stephen A. ; Lemke, Raymond W. ; Christenson, Peggy J. ; Sweeney, Mary A. ; Jones, Brent M. ; Yu, Edmund Y. ; McPherson, Leroy A. ; Harding, Eric H. ; Knapp, Patrick K. ; Gomez, Matthew R. ; Awe, Thomas J. ; Stygar, William A. ; Leeper, Ramon J. ; Ruiz, Carlos L. ; Chandler, Gordon A. ; Mckenney, John M. ; Owen, Albert C. ; McKee, George R. ; Matzen, M.K. ; Leifeste, Gordon T. ; Atherton, B.W. ; Vesey, Roger A. ; Smith, Ian C. ; Geissel, Matthias G. ; Rambo, Patrick K. ; Sinars, Daniel S. ; Sefkow, Adam B. ; Rovang, Dean C. ; Rochau, G.A.
Physical Review Letters
McBride, Ryan D. ; Peterson, Kyle J. ; Sefkow, Adam B. ; Nakhleh, Charles N. ; Laspe, Amy R. ; Lopez, Mike R. ; Smith, Ian C. ; Atherton, B.W. ; Savage, Mark E. ; Stygar, William A. ; Slutz, Stephen A. ; Rogers, Thomas J. ; Jennings, Christopher A. ; Sinars, Daniel S. ; Cuneo, M.E. ; Herrmann, Mark H. ; Lemke, Raymond W. ; Martin, Matthew ; Vesey, Roger A.
Slutz, Stephen A.
Jennings, Christopher A. ; McBride, Ryan D. ; Sinars, Daniel S. ; Slutz, Stephen A. ; Cuneo, M.E. ; Herrmann, Mark H.
McBride, Ryan D. ; Slutz, Stephen A. ; Sinars, Daniel S. ; Lemke, Raymond W. ; Martin, Matthew ; Jennings, Christopher A. ; Cuneo, M.E. ; Herrmann, Mark H.
Jennings, Christopher A. ; McBride, Ryan D. ; Sinars, Daniel S. ; Slutz, Stephen A. ; Cuneo, M.E. ; Herrmann, Mark H.
Lamppa, Derek C. ; Cuneo, M.E. ; McBride, Ryan D. ; Kaye, Ronald J. ; Sefkow, Adam B. ; Slutz, Stephen A. ; Mckenney, John M.
Peterson, Kyle J. ; Sinars, Daniel S. ; Slutz, Stephen A. ; Yu, Edmund Y. ; Herrmann, Mark H.
Physical Review Letters
Slutz, Stephen A. ; Vesey, Roger A.
Magnetized inertial fusion (MIF) could substantially ease the difficulty of reaching plasma conditions required for significant fusion yields, but it has been widely accepted that the gain is not sufficient for fusion energy. Numerical simulations are presented showing that high-gain MIF is possible in cylindrical liner implosions based on the MagLIF concept [S. A. Slutz et al Phys. Plasmas 17, 056303 (2010)PHPAEN1070-664X10.1063/1.3333505] with the addition of a cryogenic layer of deuterium-tritium (DT). These simulations show that a burn wave propagates radially from the magnetized hot spot into the surrounding much denser cold DT given sufficient hot-spot areal density. For a drive current of 60 MA the simulated gain exceeds 100, which is more than adequate for fusion energy applications. The simulated gain exceeds 1000 for a drive current of 70 MA. © 2012 American Physical Society.
Fusion Science and Technology
Cuneo, M.E. ; Matzen, M.K. ; Sinars, Daniel S. ; Slutz, Stephen A. ; Herrmann, Mark H. ; Vesey, Roger A. ; Seidel, David B. ; Schneider, Larry X. ; Mikkelson, Kenneth A. ; Harper-Slaboszewicz, V.H. ; Sefkow, Adam B.
The Meier-Moir economic model for Pulsed Power Driven Inertial Fusion Energy shows at least two approaches for fusion energy at 7 to 8 cents/kw-hr: One with large yield at 0.1 Hz and presented by M. E. Cuneo at ICENES 2011 and one with smaller yield at 3 Hz presented in this paper. Both use very efficient and low cost Linear Transformer Drivers (LTDs) for the pulsed power. Here, we report the system configuration and end-to-end simulation for the latter option, which is called the Plasma Power Station (PPS), and report the first results on the two, least mature, enabling technologies: a magnetically driven Quasi Spherical Direct Drive (QSDD) capsule for the fusion yield and an Inverse Diode for coupling the driver to the target. In addition, we describe the issues and propose to address the issues with a prototype of the PPS on the Saturn accelerator and with experiments on a short pulse modification of the Z accelerator test the validity of simulations showing megajoule thermonuclear yield with DT on a modified Z.
Physics of Plasmas
Slutz, Stephen A. ; Sinars, Daniel S. ; Herrmann, Mark H.
Cuneo, M.E. ; Slutz, Stephen A. ; Stygar, William A.
Slutz, Stephen A. ; Vesey, Roger A.
Jennings, Christopher A. ; McBride, Ryan D. ; Sinars, Daniel S. ; Slutz, Stephen A. ; Cuneo, M.E. ; Herrmann, Mark H.
McBride, Ryan D. ; Slutz, Stephen A. ; Sinars, Daniel S. ; Lemke, Raymond W. ; Martin, Matthew ; Jennings, Christopher A. ; Cuneo, M.E. ; Herrmann, Mark H.
Cuneo, M.E. ; Slutz, Stephen A. ; Stygar, William A.
Sinars, Daniel S. ; Edens, Aaron E. ; Lopez, Mike R. ; Smith, Ian C. ; Slutz, Stephen A. ; Shores, Jonathon S. ; Bennett, Guy R. ; Atherton, B.W. ; Savage, Mark E. ; Stygar, William A. ; Leifeste, Gordon T. ; Herrmann, Mark H. ; Cuneo, M.E. ; Peterson, Kyle J. ; McBride, Ryan D. ; Jennings, Christopher A. ; Vesey, Roger A. ; Nakhleh, Charles N.
Lopez, A. ; Shelton, Keegan P. ; Villalva, Jose M. ; Cuneo, M.E. ; Slutz, Stephen A. ; Vesey, Roger A.
Slutz, Stephen A. ; Vesey, Roger A. ; Herrmann, Mark H. ; Sefkow, Adam B. ; Sinars, Daniel S. ; Rovang, Dean C. ; Peterson, Kyle J. ; Cuneo, M.E.
McBride, Ryan D. ; Flicker, Dawn G. ; Herrmann, Mark H. ; Lemke, Raymond W. ; Martin, Matthew ; Davis, Jean-Paul D. ; Knudson, Marcus D. ; Sinars, Daniel S. ; Slutz, Stephen A. ; Jennings, Christopher A. ; Cuneo, M.E.
Slutz, Stephen A. ; Sefkow, Adam B. ; Matzen, M.K. ; Thomas, Rayburn D. ; Cuneo, M.E. ; Vesey, Roger A. ; Herrmann, Mark H. ; Sinars, Daniel S. ; Seidel, David B. ; Schneider, Larry X. ; Mikkelson, Kenneth A. ; Harper-Slaboszewicz, V.H.
McBride, Ryan D. ; Herrmann, Mark H. ; Slutz, Stephen A. ; Sinars, Daniel S. ; Lemke, Raymond W. ; Martin, Matthew ; Jennings, Christopher A. ; Davis, Jean-Paul D. ; Cuneo, M.E. ; Flicker, Dawn G.
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