Compression of Plasma to Megabar Range using Imploding Liner

Degnan, J.H.; Alme, M. L.; Austin, B. S.; Beason, J.D.; Coffey, S.K.; Gale, D.; Graham, J.D.; Havranek, James J.; Hussey, T. W.; Kiuttu, G.F.; Kreh, B.B.; Lehr, F.M.; Lewis, R.; Lileikis, D.E.; Морган, Д.; Outten, C.A.; Peterkin, R.E.; Platts, D.; Roderick, N. F.; Ruden, E.L.; Shumlak, U.; Smith, Gerald A.; Sommars, W.; Turchi, P. J.

doi:10.1103/physrevlett.82.2681

Cited by 48 publications

(24 citation statements)

References 7 publications

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“…Experiments at AFRL's Shiva Star facility during the past two decades have shown that high-current-driven implosions of initially solid shells up to 10 centimeters in diameter can produce sufficiently high pressures to drive targets to a radial compression of 10 times or more without substantial degradation in implosion quality from a class of Rayleigh-Taylor-like fluid instabilities [7,8]. These results provided confidence that MTF is possible in the Shiva Star facility.…”

Section: Plasma Is Intermediate In Density Between Magnetic Fusion Ensupporting

confidence: 57%

“…Like ICF, MTF requires a pulsed high pressure to create a high-density fuel, but because the applied magnetic field suppresses thermal conduction, the high pressure can be created over a longer timescale than that required for ICF, and the compression process can proceed nearly adiabatically. targets to a radial compression of 10 times or more without substantial degradation in implosion quality from a class of Rayleigh-Taylor-like fluid instabilities [7,8]. These results provided confidence that MTF is possible in the Shiva Star facility.…”

supporting

confidence: 56%

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High Energy Research and Applications (HERA) Pulsed Power and Pulsed Power Systems R&D for Magnetized Target Fusion Using Field Reversed Configurations (MTF-FRC)

Kiuttu¹,

Coffey²,

Camacho³

et al. 2013

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM PPM00001079 PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) AND ADDRESS(ES) PERFORMING ORGANIZATION REPORT NUMBERScience Applications International Corporation 2109 Air Park Road SE Albuquerque, NM 87106 SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S)Air Force Research Laboratory 3550 Aberdeen Ave SE Kirtland AFB, NM 87117-5776 AFRL/RDHP SPONSOR/MONITOR'S REPORT NUMBER(S)AFRL-RD-PS-TR-2013-0020 DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES Public Affairs Release #377ABW-2013-073114. ABSTRACT We described efforts to advance the state of the art for Magnetized Target Fusion (MTF) using Field Reversed Configuration (FRC) plasmas. The work is primarily experimental. We document production, translation, and trapping of FRCs in a coaxial system, and initial efforts to drive cylindrical aluminum liners with the Shiva Star fast capacitor bank to compress magnetic flux and magnetized plasma. We describe the pulsed power systems used to create and manipulate the plasma and the diagnostics employed to determine magnetic field and plasma characteristics. We also describe modifications to the plasma system for puffed gas injection, radio frequency (RF) systems for pre-preionization of the gas, and use of biased rings to attempt to control the rotation and subsequent instability of the plasma ii Approved for public release; distribution is unlimited. SUBJECT TERMS This page intentionally left blank.iii Approved for public release; distribution is unlimited. -3 ............................................................................................................................ testing involved forming plasma in deuterium gas using multiple theta-coil discharges, translating the plasma from the formation region to a capture region using magnetic guide fields, injecting the plasma into a compression region inside a 1-mm-thick, 30-cm long cylindrical aluminum liner, and trapping it there using mirror magnetic fields above and below the liner. conditions. The strategies included opti...

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Section: Plasma Is Intermediate In Density Between Magnetic Fusion Ensupporting

confidence: 57%

supporting

confidence: 56%

High Energy Research and Applications (HERA) Pulsed Power and Pulsed Power Systems R&D for Magnetized Target Fusion Using Field Reversed Configurations (MTF-FRC)

Kiuttu¹,

Coffey²,

Camacho³

et al. 2013

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“…1). Creating high magnetic fields by magnetic-flux compression has been pursued over several decades, for example, by imploding Z-pinches [21][22][23][24] or metal liners driven either electromagnetically 25,26 or with high explosives. 27 In ICF, the required magnetic fields for magnetization of a hot spot can be produced by 100-to 1000-fold compression of an $100-kG seed magnetic field.…”

Section: Magnetic-flux Compressionmentioning

confidence: 99%

Inertial confinement fusion implosions with imposed magnetic field compression using the OMEGA Laser

et al. 2012

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Experiments applying laser-driven magnetic-flux compression to inertial confinement fusion (ICF) targets to enhance the implosion performance are described. Spherical plastic (CH) targets filled with 10 atm of deuterium gas were imploded by the OMEGA Laser, compare Phys. Plasmas 18, 056703 or Phys. Plasmas 18, 056309. Before being imploded, the targets were immersed in an 80-kG magnetic seed field. Upon laser irradiation, the high implosion velocities and ionization of the target fill trapped the magnetic field inside the capsule, and it was amplified to tens of megagauss through flux compression. At such strong magnetic fields, the hot spot inside the spherical target was strongly magnetized, reducing the heat losses through electron confinement. The experimentally observed ion temperature was enhanced by 15%, and the neutron yield was increased by 30%, compared to nonmagnetized implosions [P. Y. Chang et al., Phys. Rev. Lett. 107, 035006 (2011)]. This represents the first experimental verification of performance enhancement resulting from embedding a strong magnetic field into an ICF capsule. Experimental data for the fuel-assembly performance and magnetic field are compared to numerical results from combining the 1-D hydrodynamics code LILAC with a 2-D magnetohydrodynamics postprocessor.

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“…The conventional method is to modulate the areal mass density with the latitude θ as m(θ) ∝ 1/ cos 2 θ. This so-called mass-redistribution method was proved feasible by a serial of experiments on the 9µs, 12MA Shiva Star accelerator [91,92], but does not work with wire-arrays and short pulse generators used for ZPDH study. Previous attempts on the Angara5-I [87] and MAGPIE generators did not show compelling evidence of QS implosions with wire-arrays.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 98%

Theoretical and numerical research of wire array Z-pinch and dynamic hohlraum at IAPCM

Ding

Zhang

Xiao

et al. 2016

Matter and Radiation at Extremes

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Dense Z-pinch plasmas are powerful and energy-efficient laboratory sources of x rays, and show the possibility to drive inertial confinement fusion (ICF). Recent advances in wire-array Z-pinch and Z-pinch dynamic hohlraum (ZPDH) researches at the Institute of Applied Physics and Computational Mathematics are presented in this paper. Models are setup to study different physical processes. A full circuit model (FCM) was used to study the coupling between Z-pinch implosion and generator discharge. A mass injection model with azimuthal modulation was setup to simulate the wire-array plasma initiation, and the two-dimensional MHD code MARED was developed to investigate the Z-pinch implosion, MRT instability, stagnation and radiation. Implosions of nested and quasispherical wire array were also investigated theoretically and numerically. Key processes of ZPDH, such as the array-foam interaction, formation of the hohlraum radiation, as well as the following capsule ablation and implosion, were analyzed with different radiation magneto-hydrodynamics (RMHD) codes. An integrated 2D RMHD simulation of dynamic hohlraum driven capsule implosion provides us the physical insights of wire-array plasma acceleration, shock generation and propagation, hohlraum formation, radiation ablation, and fuel compression.

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Compression of Plasma to Megabar Range using Imploding Liner

Cited by 48 publications

References 7 publications

High Energy Research and Applications (HERA) Pulsed Power and Pulsed Power Systems R&D for Magnetized Target Fusion Using Field Reversed Configurations (MTF-FRC)

High Energy Research and Applications (HERA) Pulsed Power and Pulsed Power Systems R&D for Magnetized Target Fusion Using Field Reversed Configurations (MTF-FRC)

Inertial confinement fusion implosions with imposed magnetic field compression using the OMEGA Laser

Theoretical and numerical research of wire array Z-pinch and dynamic hohlraum at IAPCM

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