Search Results - "Remington, B A"
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In situ X-ray diffraction measurement of shock-wave-driven twinning and lattice dynamics
Published in Nature (London) (26-10-2017)“…In situ femtosecond X-ray diffraction measurements reveal that the dominant mechanism of shock-wave-driven deformation in tantalum changes from twinning to…”
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Observation of magnetic field generation via the Weibel instability in interpenetrating plasma flows
Published in Nature physics (19-01-2015)“…Astrophysical processes are often driven by collisionless plasma shock waves. The Weibel instability, a possible mechanism for developing such shocks, has now…”
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Electron acceleration in laboratory-produced turbulent collisionless shocks
Published in Nature physics (01-09-2020)“…Astrophysical collisionless shocks are among the most powerful particle accelerators in the Universe. Generated by violent interactions of supersonic plasma…”
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Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum
Published in Physical review letters (29-06-2018)“…We have used femtosecond x-ray diffraction to study laser-shocked fiber-textured polycrystalline tantalum targets as the 37-253 GPa shock waves break out from…”
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High-adiabat high-foot inertial confinement fusion implosion experiments on the national ignition facility
Published in Physical review letters (05-02-2014)“…This Letter reports on a series of high-adiabat implosions of cryogenic layered deuterium-tritium (DT) capsules indirectly driven by a "high-foot" laser drive…”
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Design of a high-foot high-adiabat ICF capsule for the national ignition facility
Published in Physical review letters (05-02-2014)“…The National Ignition Campaign's [M. J. Edwards et al., Phys. Plasmas 20, 070501 (2013)] point design implosion has achieved DT neutron yields of 7.5×10(14)…”
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First measurements of hydrodynamic instability growth in indirectly driven implosions at ignition-relevant conditions on the National Ignition Facility
Published in Physical review letters (08-05-2014)“…Ignition experiments have shown an anomalous susceptibility to hydrodynamic instability growth. To help understand these results, the first hydrodynamic…”
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Extreme Hardening of Pb at High Pressure and Strain Rate
Published in Physical review letters (15-11-2019)“…We study the high-pressure strength of Pb and Pb-4wt%Sb at the National Ignition Facility. We measure Rayleigh-Taylor growth of preformed ripples ramp…”
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Self-organized electromagnetic field structures in laser-produced counter-streaming plasmas
Published in Nature physics (01-11-2012)“…Stable structures can self-assemble in plasmas flowing at supersonic speeds, as evident in many astronomical objects. But now it is also seen in the laboratory…”
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Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves
Published in Nature (London) (26-01-2012)“…Experimental simulations of galaxy-forming conditions using lasers show that the Biermann battery generates seed magnetic fields, which turbulence can amplify…”
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Extended X-ray absorption fine structure of dynamically-compressed copper up to 1 terapascal
Published in Nature communications (10-11-2023)“…Large laser facilities have recently enabled material characterization at the pressures of Earth and Super-Earth cores. However, the temperature of the…”
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Scaled laboratory experiments explain the kink behaviour of the Crab Nebula jet
Published in Nature communications (07-10-2016)“…The remarkable discovery by the Chandra X-ray observatory that the Crab nebula’s jet periodically changes direction provides a challenge to our understanding…”
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Molecular dynamics simulations of shock-induced deformation twinning of a body-centered-cubic metal
Published in Physical review. B, Condensed matter and materials physics (17-09-2013)“…Despite a number of previous nonequilibrium molecular dynamics (MD) studies into plasticity in face-centered-cubic metals, and phase transitions in…”
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Void growth by dislocation emission
Published in Acta materialia (05-04-2004)“…Laser shock experiments conducted at an energy density of 61 MJ/m 2 revealed void initiation and growth at stress application times of approximately 10 ns. It…”
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Shock deformation of face-centred-cubic metals on subnanosecond timescales
Published in Nature materials (01-10-2006)“…Despite its fundamental importance for a broad range of applications, little is understood about the behaviour of metals during the initial phase of shock…”
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Grain-size-independent plastic flow at ultrahigh pressures and strain rates
Published in Physical review letters (13-02-2015)“…A basic tenet of material science is that the flow stress of a metal increases as its grain size decreases, an effect described by the Hall-Petch relation…”
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Nonisentropic Release of a Shocked Solid
Published in Physical review letters (13-12-2019)“…We present molecular dynamics simulations of shock and release in micron-scale tantalum crystals that exhibit postbreakout temperatures far exceeding those…”
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Phase Transformation in Tantalum under Extreme Laser Deformation
Published in Scientific reports (19-10-2015)“…The structural and mechanical response of metals is intimately connected to phase transformations. For instance, the product of a phase transformation…”
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Atomistic simulation of tantalum nanoindentation: Effects of indenter diameter, penetration velocity, and interatomic potentials on defect mechanisms and evolution
Published in Materials science & engineering. A, Structural materials : properties, microstructure and processing (08-09-2014)“…Nanoindentation simulations are a helpful complement to experiments. There is a dearth of nanoindentation simulations for bcc metals, partly due to the lack of…”
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Performance and Mix Measurements of Indirect Drive Cu-Doped Be Implosions
Published in Physical review letters (22-05-2015)“…The ablator couples energy between the driver and fusion fuel in inertial confinement fusion (ICF). Because of its low opacity, high solid density, and…”
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