R.P. Golingo, U. Shumlak, B. A. Nelson,
The ZaP Flow Z-Pinch project is experimentally studying the effect of sheared flows on Z-pinch stability. It has been shown theoretically that when ... W. Hartman, Phys. Rev. Lett. 75, 3285 (1995).] Z pinches with an embedded axial flow are formed in ... with a 1m assembly region. Long-lived, quiescent Z pinches are generated throughout the first half cycle of ... is proportional to the radial displacement of the Z-pinch plasma current. The magnetic mode levels show a ... 2000 times the growth time of a static Z pinch. The axial velocity is measured along 20 chords ...
Tópico(s): Plasma Diagnostics and Applications
2005 - American Institute of Physics | Physics of Plasmas
C. L. Olson, G. A. Rochau, S. A. Slutz, Charles Morrow, Richard E. Olson, M. E. Cuneo, D. L. Hanson, Guy R. Bennett, Thomas Sanford, J. E. Bailey, W. A. Stygar, R. A. Vesey, T. A. Mehlhorn, K. W. Struve, M.G. Mazarakis, M. E. Savage, T. D. Pointon, Mark L. Kiefer, S.E. Rosenthal, Kyle Cochrane, L Schneider, Steven F. Glover, Kim Reed, D. G. Schroen, Cathy Farnum, M. Modesto, D. Oscar, L.C. Chhabildas, J.D. Boyes, Virginia Vigil, Rodney Lyman Keith, Matthew Turgeon, M. Cipiti, Eric Lindgren, Vincent J. Dandini, Hy D. Tran, David L. Smith, D. H. McDaniel, J. P. Quintenz, M. K. Matzen, J. Pace VanDevender, W.B. Gauster, Les E. Shephard, Marianne C. Walck, Timothy Renk, T.J. Tanaka, M. Ulrickson, W.R. Meier, J. Latkowski, R.W. Moir, Robert G. Schmitt, S. Reyes, Ryan P. Abbott, R. R. Peterson, G.M. Pollock, P. F. Ottinger, J. W. Schumer, Per F. Peterson, Daniel C. Kammer, G.L. Kulcinski, L. El-Guebaly, G.A. Moses, I.N. Sviatoslavsky, M.E. Sawan, Mark Anderson, Riccardo Bonazza, Jason Oakley, P. Meekunasombat, John de Groot, Newell Jensen, Mohamed Abdou, Alice Ying, P. Calderoni, N.B. Morley, S. I. Abdel‐Khalik, Chad Michael Dillon, C. Lascar, D. L. Sadowski, Randy D. Curry, Kerry S. McDonald, Mark E. Barkey, W. Szaroletta, R. Gallix, N. Alexander, W.S. Rickman, C. Charman, H.D. Shatoff, D. R. Welch, David J. Rose, P. Panchuk, David Louie, S. O. Dean, A. Kim, С. Л. Недосеев, E. Grabovsky, A. S. Kingsep, В. П. Смирнов,
AbstractThe long-range goal of the Z-Pinch IFE program is to produce an economically-attractive power plant using high-yield z-pinch-driven targets (~3GJ) with low rep-rate per ... 1 Hz). The present mainline choice for a Z-Pinch IFE power plant uses an LTD (Linear Transformer ... a Recyclable Transmission Line (RTL), a dynamic hohlraum z-pinch-driven target, and a thick-liquid wall chamber. ... connects the pulsed power driver directly to the z-pinch-driven target, and is made from frozen coolant ... inserted on each shot.A development path for Z-Pinch IFE has been created that complements and leverages ...
Tópico(s): High-pressure geophysics and materials
2005 - Taylor & Francis | Fusion Science & Technology
R. B. Spielman, C. Deeney, M. R. Douglas, G. A. Chandler, M. E. Cuneo, T. J. Nash, J. L. Porter, L. E. Ruggles, T.W.L. Sanford, W. A. Stygar, K. W. Struve, M. K. Matzen, D. H. McDaniel, Darrell L. Peterson, J. H. Hammer,
... pulsed power technologies has enabled the use of z pinches for inertial confinement fusion (ICF). Z pinches can provide x-ray powers of 200 TW ... tools. Several ICF configurations have been proposed. The z-pinch driven hohlraum configuration (ZPDH) uses two separate z pinches to provide the radiation to drive an ICF capsule. The decoupling of the z-pinch from the target in the ZPHD permits physics ... radiation transport. The dynamic hohlraum concept uses the z pinch itself as a radiation case around the capsule ...
Tópico(s): Particle Accelerators and Free-Electron Lasers
2000 - IOP Publishing | Plasma Physics and Controlled Fusion
F. Conti, J. C. Valenzuela, Vladimir Fadeev, N. Aybar, D. B. Reisman, A. Williams, Gilbert Collins, J. Narkis, M. P. Ross, F. N. Beg, R. B. Spielman,
... new machine is called compact experimental system for $Z$-pinch and ablation research (CESZAR). The driver has a ... machine was then used to drive wire array $Z$-pinch and gas puff $Z$-pinch experiments as initial dynamic plasma loads. The evolution of the wire array $Z$ pinch is consistent with the general knowledge of this ... the precursor plasma on axis. The gas puff $Z$ pinches were configured as a single, hollow argon gas ... which makes it a versatile platform for studying $Z$-pinch plasmas. The completion of the CESZAR driver allows ...
Tópico(s): Gyrotron and Vacuum Electronics Research
2020 - American Physical Society | Physical Review Accelerators and Beams
В. В. Иванов, Austin A. Anderson, D. Papp, B. R. Talbot, J. P. Chittenden, N. Niasse, I. A. Begishev,
... nm were developed for the investigation of dense Z-pinch plasma at the 1 MA Zebra generator. A ... investigation of the fine structure of the dense Z-pinch, development of instabilities, and a distribution of magnetic fields in Z-pinch plasma. Micropinches and instabilities with characteristic scales of ... μm were observed in 1 MA wire-array Z pinches. Development of instabilities in wire-array Z pinches is in agreement with the magnetohydrodynamic simulations. Interferometry ... can provide the additional kinetic energy in the Z pinch and can be a source of enhanced X- ...
Tópico(s): Atomic and Molecular Physics
2014 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Plasma Science
Kurt Tummel, D. P. Higginson, A. Link, Andréa Schmidt, Dustin Offermann, D. R. Welch, Robert E. Clark, U. Shumlak, B. A. Nelson, R.P. Golingo, H. S. McLean,
... in-cell (PIC) simulations of sheared flow stabilized Z-pinch plasmas show the suppression of the sausage instability ... experimental observations. Experimental investigations of sheared-flow stabilized Z-pinches demonstrated stability for 10 s of microseconds, over ... would necessitate substantial energy convection out of the Z-pinch and the need to drive and sustain supersonic ... high-temperature, high-current environments desirable for many Z-pinch applications, and they ignore large Larmor radius effects ...
Tópico(s): Ionosphere and magnetosphere dynamics
2019 - American Institute of Physics | Physics of Plasmas
В. В. Иванов, Andrew A. Anderson, D. Papp,
... provides powerful tools for the investigation of dense Z-pinches. In this paper, wire-array Z-pinches are investigated at the 1 MA Zebra generator ... arrays. Ultraviolet diagnostics allows deep penetration into the Z-pinch plasma at stagnation. End-on probing reveals the ... plasma. Small-scale instabilities are seen in the Z-pinch plasma with micrometer resolution. Probing of the pinch ... distribution in the plasma of the precursor and Z-pinch. Redistribution of current in the trailing plasma is ... formation of micropinches and hot spots in the Z-pinch is analyzed with coupled laser and x-ray ...
Tópico(s): Laser-induced spectroscopy and plasma
2019 - American Institute of Physics | Matter and Radiation at Extremes
U. Shumlak, B. A. Nelson, R.P. Golingo, S. L. Jackson, E. A. Crawford, D. J. Den Hartog,
... flow on the m=1 kink instability in Z pinches has been studied numerically with a linearized ideal ... flow stabilizing effect is investigated with the ZaP (Z-Pinch) Flow Z-pinch experiment at the University of Washington. An axially flowing Z pinch is generated with a 1 m coaxial accelerator ... flow profiles during periods of high mode activity. Z-pinch plasmas have been produced that are globally stable ... time for the kink mode of a static Z pinch. The plasma has a sheared axial flow that ...
Tópico(s): Fluid Dynamics and Turbulent Flows
2003 - American Institute of Physics | Physics of Plasmas
R. W. Lemke, J. E. Bailey, G. A. Chandler, T. J. Nash, S. A. Slutz, T. A. Mehlhorn,
Z-pinch plasmas are susceptible to the magnetic Rayleigh–Taylor (MRT) instability. The Z-pinch dynamic hohlraum (ZPDH), as implemented on the Z ... a coaxial foam convertor. The collision between tungsten Z pinch and convertor launches a strong shock in the ... generates radiation that is trapped by the tungsten Z pinch. The radiation can be used to implode a ... are tamped by the interaction of the tungsten Z-pinch plasma with the foam. These results suggest that ... free from random radiation symmetry variations produced by Z-pinch instabilities.
Tópico(s): Magnetic confinement fusion research
2004 - American Institute of Physics | Physics of Plasmas
D. D. Ryutov, M. S. Derzon, M. K. Matzen,
... in fast implosions of annular current sheaths (fast Z pinches) opens new possibilities for a broad spectrum of ... to controlled thermonuclear fusion and astrophysics. At present Z pinches are the most intense laboratory x-ray sources ( ... behavior of radiating, current-carrying plasma in fast Z pinches. This survey covers essentially all aspects of the physics of fast Z pinches: initiation, instabilities of the early stage, magnetic Rayleigh- ... beams, etc.) are summarized. Various applications of fast Z pinches are briefly described. Scaling laws governing development of ...
Tópico(s): Atomic and Molecular Physics
2000 - American Physical Society | Reviews of Modern Physics
Roger Alan Vesey, R. B. Campbell, S. A. Slutz, David L. Hanson, M. E. Cuneo, T. A. Mehlhorn, J. L. Porter,
... with precise ultraintense laser pulses for fuel ignition. Z-pinches convert electrical energy into thermal X-ray energy ... indirect-drive fuel assembly. Currently, experiments use the Z-pinch vacuum hohlraum, in which the Z-pinch heats a hohlraum that reemits thermal X-rays ... capsule. Surface-guided hemispherical capsule implosion experiments in Z-pinch vacuum hohlraums are in progress to study energetics, ... given driver energy may be possible using the Z-pinch dynamic hohlraum, in which the Z-pinch plasma ...
Tópico(s): High-pressure geophysics and materials
2006 - Taylor & Francis | Fusion Science & Technology
I. C. Blesener, J. B. Greenly, S. A. Pikuz, T. A. Shelkovenko, S. Vishniakou, D. A. Hammer, B. R. Kusse,
... for an axial imaging system for wire-array Z-pinch experiments that produce high-resolution x-ray images. ... electrode hardware. Calibrated areal density measurements of the Z-pinch plasma including wire cores, coronal plasma, streaming plasma, ... pinches in series with and directly below the Z-pinch axis to provide micron-scale x-rays sources ... film had an unobstructed path that bypasses the Z-pinch but included step wedges for calibration of the Z-pinch plasma. The step wedges had thicknesses of tungsten ( ...
Tópico(s): X-ray Spectroscopy and Fluorescence Analysis
2009 - American Institute of Physics | Review of Scientific Instruments
W. A. Stygar, M. E. Cuneo, Daniel Headley, H.C. Ives, R. J. Leeper, M.G. Mazarakis, C. L. Olson, J. L. Porter, T. C. Wagoner, J. R. Woodworth,
... the basis of the design of petawatt-class $z$-pinch drivers. The architecture has been applied to the design of two $z$-pinch accelerators, each of which can be contained within ... text{ }\ensuremath{\mu}\mathrm{s}$) required to drive $z$ pinches. The other is powered by linear transformer drivers ( ... MITLs, and delivers the combined current to a $z$-pinch load. The accelerator delivers an effective peak current of 52 MA to a 10-mm-length $z$ pinch that implodes in 95 ns, and 57 MA ...
Tópico(s): Gyrotron and Vacuum Electronics Research
2007 - American Physical Society | Physical Review Special Topics - Accelerators and Beams
Roger Alan Vesey, Mark Herrmann, R. W. Lemke, M. P. Desjarlais, M. E. Cuneo, W. A. Stygar, Guy R. Bennett, R. B. Campbell, P. J. Christenson, T. A. Mehlhorn, J. L. Porter, S. A. Slutz,
... yield inertial confinement fusion (ICF) target involving two Z-pinch x-ray sources heating a central secondary hohlraum ... have been used to design a high-yield Z-pinch-driven ICF target that incorporates the latest experience ... hohlraum symmetry control, and x-ray production by Z pinches. An x-ray energy output of 9MJ per ... of a high-yield capsule in the double Z-pinch hohlraum. An important new feature of this target ... 2D simulations, provide a preliminary estimate of the Z-pinch load and accelerator requirements necessary to drive the ...
Tópico(s): Atomic and Molecular Physics
2007 - American Institute of Physics | Physics of Plasmas
M. E. Cuneo, Roger Alan Vesey, Guy R. Bennett, D. B. Sinars, W. A. Stygar, E. M. Waisman, J. L. Porter, Patrick K. Rambo, I. C. Smith, S. V. Lebedev, J. P. Chittenden, David E. Bliss, T. J. Nash, G. A. Chandler, Bedros Afeyan, Edmund Yu, R. B. Campbell, R. G. Adams, D. L. Hanson, T. A. Mehlhorn, M. K. Matzen,
... rapid progress has been made evaluating the double-z-pinch indirect-drive, inertial confinement fusion (ICF) high-yield ... secondary hohlraum is irradiated from two sides by z-pinches to produce low odd-mode radiation asymmetry. This ... on the 20 MA Z accelerator. The double z-pinch has imploded ICF capsules with even-mode radiation ... at 20 MA are improving our understanding of z-pinch power scaling with increasing drive current. Techniques for shaping the z-pinch radiation pulse necessary for low adiabat capsule compression ...
Tópico(s): Laser-Matter Interactions and Applications
2006 - IOP Publishing | Plasma Physics and Controlled Fusion
T. J. Nash, D. H. McDaniel, R. J. Leeper, C. Deeney, T. W. L. Sanford, K. W. Struve, J. S. DeGroot,
A quasi-spherical z-pinch may directly compress foam or deuterium and tritium in three dimensions as opposed to a cylindrical z-pinch, which compresses an internal load in two dimensions ... of compression in three dimensions the quasi-spherical z-pinch is more efficient at doing pdV work on ... than a cylindrical pinch. Designs of quasi-spherical z-pinch loads for the 28MA 100ns driver ZR, results ... will be presented. Applications of the quasi-spherical z-pinch implosions include a high radiation temperature source for ...
Tópico(s): Magnetic confinement fusion research
2005 - American Institute of Physics | Physics of Plasmas
R. B. Spielman, J. S. De Groot,
Z pinches have a long and varied history. Beginning in the 18th century, z pinches have been used to heat plasmas very efficiently. ... the world. These uniformly negative results led to z pinches being dropped as a fusion concept. Recent progress in fast z pinches has reinvigorated the field. We review the field ... point the way to a bright future for z pinches.
Tópico(s): Atomic and Molecular Physics
2001 - Cambridge University Press | Laser and Particle Beams
Ning Ding, Yang Zhang, Delong Xiao, Jiming Wu, Zihuan Dai, Li Yin, Zhiming Gao, Shunkai Sun, Chuang Xue, Ning Cheng, Xiaojian Shu, Jianguo Wang,
Dense Z-pinch plasmas are powerful and energy-efficient laboratory sources of X-rays, and show the possibility to drive ... confinement fusion (ICF). Recent advances in wire-array Z-pinch and Z-pinch dynamic hohlraum (ZPDH) researches at the Institute of ... FCM) was used to study the coupling between Z-pinch implosion and generator discharge. A mass injection model ... MHD code MARED was developed to investigate the Z-pinch implosion, MRT instability, stagnation and radiation. Implosions of ...
Tópico(s): Laser-Matter Interactions and Applications
2016 - American Institute of Physics | Matter and Radiation at Extremes
U. Shumlak, B. A. Nelson, E.L. Claveau, Eleanor Forbes, R.P. Golingo, M.C. Hughes, R.J. Oberto, M. P. Ross, T. R. Weber,
The ZaP and ZaP-HD Flow Z-pinch experiments at the University of Washington have successfully demonstrated that sheared plasma flows can be used as a stabilization mechanism over a ... has not previously been accessible to long-lived Z-pinch configurations. The stabilization is effective even when the ... maximum axial length of a sheared flow stabilized Z-pinch. Measurements of the magnetic field topology indicate simultaneous ... along the entire 100 cm length of the Z-pinch plasma. Separate control of plasma acceleration and compression ...
Tópico(s): Plasma Diagnostics and Applications
2017 - American Institute of Physics | Physics of Plasmas
Jian Wu, Xingwen Li, Mo Li, Yang Li, Aici Qiu,
... ray source in the laboratories, the wire array Z pinches have been of great relevance to inertial confinement ... the dielectric coatings on electrical exploding wires and Z pinches. Since the early 2000, the electrical wire explosion ... to the first stage of the wire array Z pinches has been studied extensively, and the results indicated ... interest in the dynamics of insulated wire array Z pinches. By applying dielectric coatings, the ablation process is ... organized by the evolution dynamics of wire array Z pinches, and a broad introduction to relevant scientific concepts ...
Tópico(s): Ion-surface interactions and analysis
2017 - Institute of Physics | Journal of Physics D Applied Physics
The ZaP-HD flow Z-pinch project provides a platform to explore how shear flow stabilized Z-pinches could scale to high-energy-density plasma (plasma ... exceeding 1 Mbar) and fusion reactor conditions. The Z-pinch is a linear plasma confinement geometry in which ... magnetic field. ZaP-HD generates shear stabilized, axisymmetric Z-pinches with stable lifetimes approaching 60 μs. The goal ... that utilizes data on both sides of a Z-pinch local number density profile to maximize profile symmetry. ...
Tópico(s): Advanced Optical Imaging Technologies
2016 - American Institute of Physics | Review of Scientific Instruments
Eleanor Forbes, U. Shumlak, H. S. McLean, B. A. Nelson, E.L. Claveau, Raymond Golingo, D. P. Higginson, James Mitrani, A.D. Stepanov, Kurt Tummel, T. R. Weber, Yue Zhang,
The sheared-flow-stabilized (SFS) Z-pinch is a promising confinement concept for the development of a compact fusion reactor. The Z-pinch has been theoretically and experimentally shown to be ... present. At the University of Washington, the Fusion Z-pinch Experiment (FuZE) research project examines scaling the SFS Z-pinch toward fusion conditions. The FuZE device produces long- ... μs, thousands of times longer than the static Z-pinch instability growth time. Measured neutron production is consistent ...
Tópico(s): Fusion materials and technologies
2019 - Taylor & Francis | Fusion Science & Technology
R. K. Cherdizov, R. B. Baksht, V. A. Kokshenev, V. I. Oreshkin, A. G. Rousskikh, A. V. Shishlov, D. L. Shmelev, A. S. Zhigalin,
... profile of the material of a metal-plasma Z-pinch load on the development of magneto-Rayleigh–Taylor ( ... which produces microsecond rise time megaampere currents. The Z-pinch load was an aluminum plasma jet (PJ) with ... formation of a uniform current sheath in a Z-pinch load upon application of a high-voltage pulse. ... 22 103036). The initial density profiles of the Z-pinch loads were estimated from the pinch current and ... et al 2020 Phys. Plasmas 27 092708). Two Z-pinch load configurations were used in the experiments. The ...
Tópico(s): Laser-Matter Interactions and Applications
2021 - IOP Publishing | Plasma Physics and Controlled Fusion
... earliest experiments in controlled thermonuclear fusion research were Z -pinches. However these pinches were found to be highly ... after its three-dimensional compression closely resembles a Z -pinch, have shown that a plasma of density 10 ... pulse technology has permitted the reconsideration of the Z -pinch to attain dense fusion plasmas which might be ... current waveform. Theory indicates that a dense compact Z -pinch can satisfy Lawson conditions with a power input ... heat losses. Preliminary results on a laser-initiated Z -pinch are also presented.
Tópico(s): Laser Design and Applications
1981 - Royal Society | Philosophical Transactions of the Royal Society of London Series A Mathematical and Physical Sciences
А. И. Клеев, A. L. Velikovich,
... approximation. For the cases of implosion of a Z pinch, expansion of an inverse Z pinch, implosion of a theta pinch and magnetic flux ... the known expression (gk)12/. For an annular Z pinch or liner the effective growth rate of the ... in the course of implosion of a solid Z pinch: in this case perturbations do not propagate with ...
Tópico(s): Atomic and Molecular Physics
1990 - IOP Publishing | Plasma Physics and Controlled Fusion
R. B. Spielman, R. J. Dukart, D. L. Hanson, B. A. Hammel, W. W. Hsing, M. K. Matzen, J. L. Porter,
We have recently completed the first gas‐puff Z‐pinch experiments on Saturn (32 TW, 1.4 MJ, ... the most powerful driver to date for fast Z‐pinch experiments. Saturn, a 36 module accelerator, uses a ... current to the load. The 10‐nH Saturn Z‐pinch diode is capable of delivering a peak current ... minimal with nearly complete current delivery to the Z‐pinch load. We have conducted experiments with deuterium, neon, ...
Tópico(s): Pulsed Power Technology Applications
1989 - American Institute of Physics | AIP conference proceedings
F. S. Felber, F. J. Wessel, N. Wild, H. U. Rahman, A. Fisher, C.M. Fowler, M. A. Liberman, A. L. Velikovich,
... been produced and measured in a gas-puff Z pinch. A 0.5-MA, 2-cm-radius annular gas-puff Z pinch with a 3-min repetition rate was imploded ... of compressing axial fields in a gas-puff Z pinch is extrapolable to the order of 100 MG. ... presented. Potential applications of ultrahigh axial fields in Z pinches are discussed for x-ray lasers, inertial confinement ...
Tópico(s): Laser Design and Applications
1988 - American Institute of Physics | Journal of Applied Physics
T.-F. Chang, A. Fisher, A. Van Drie,
... anode of the UCI (University of California, Irvine) z-pinch facility were modified to study the influence of ... nozzle were used for the Kr and Ne z pinches. After a few tens of shots the Zr ... serendipity it was found that double gas puff z pinch increased the hard x-ray (>1 keV) ... are both enhanced by the double gas puff z pinch.
Tópico(s): Laser Design and Applications
1991 - American Institute of Physics | Journal of Applied Physics
A. Yu. Labetsky, R. B. Baksht, V. I. Oreshkin, A. G. Rousskikh, A. V. Shishlov,
... for the heating of the plasma of a Z pinch due to the generation of toroidal magnetic structures ( ... enhanced energy deposition into the plasma of a Z pinch. Probing of the plasma was carried out with ... that at the stage of stagnation of a Z pinch, there are regions inside the plasma column where ... portion of the azimuthal magnetic field of the Z pinch is captured by the current loop (a magnetic ...
Tópico(s): Atomic and Molecular Physics
2002 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Plasma Science