Search Results - "Döppner, T."
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Ultrabright X-ray laser scattering for dynamic warm dense matter physics
Published in Nature photonics (23-03-2015)“…In megabar shock waves, materials compress and undergo a phase transition to a dense charged-particle system that is dominated by strong correlations and…”
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2
Nanosecond formation of diamond and lonsdaleite by shock compression of graphite
Published in Nature communications (14-03-2016)“…The shock-induced transition from graphite to diamond has been of great scientific and technological interest since the discovery of microscopic diamonds in…”
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3
Fuel gain exceeding unity in an inertially confined fusion implosion
Published in Nature (London) (20-02-2014)“…Fusion fuel gains greater than unity — which are crucial to the generation of fusion energy — are achieved on the US National Ignition Facility using the…”
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4
Observing the onset of pressure-driven K-shell delocalization
Published in Nature (London) (08-06-2023)“…The gravitational pressure in many astrophysical objects exceeds one gigabar (one billion atmospheres) 1 – 3 , creating extreme conditions where the distance…”
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5
Demonstration of X-ray Thomson scattering as diagnostics for miscibility in warm dense matter
Published in Nature communications (26-05-2020)“…The gas and ice giants in our solar system can be seen as a natural laboratory for the physics of highly compressed matter at temperatures up to thousands of…”
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6
Observations of continuum depression in warm dense matter with x-ray Thomson scattering
Published in Physical review letters (11-04-2014)“…Detailed measurements of the electron densities, temperatures, and ionization states of compressed CH shells approaching pressures of 50 Mbar are achieved with…”
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7
Formation of diamonds in laser-compressed hydrocarbons at planetary interior conditions
Published in Nature astronomy (01-09-2017)“…The effects of hydrocarbon reactions and diamond precipitation on the internal structure and evolution of icy giant planets such as Neptune and Uranus have…”
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8
Development of Improved Radiation Drive Environment for High Foot Implosions at the National Ignition Facility
Published in Physical review letters (25-11-2016)“…Analyses of high foot implosions show that performance is limited by the radiation drive environment, i.e., the hohlraum. Reported here are significant…”
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9
Visualizing fast electron energy transport into laser-compressed high-density fast-ignition targets
Published in Nature physics (01-05-2016)“…Recent progress in kilojoule-scale high-intensity lasers has opened up new areas of research in radiography, laboratory astrophysics, high-energy-density…”
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10
Evidence for suprathermal ion distribution in burning plasmas
Published in Nature physics (01-01-2023)“…At the National Ignition Facility, inertial confinement fusion experiments aim to burn and ignite a hydrogen plasma to generate a net source of energy through…”
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11
First Measurements of Fuel-Ablator Interface Instability Growth in Inertial Confinement Fusion Implosions on the National Ignition Facility
Published in Physical review letters (12-08-2016)“…Direct measurements of hydrodynamic instability growth at the fuel-ablator interface in inertial confinement fusion (ICF) implosions are reported for the first…”
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12
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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13
Evidence of Three-Dimensional Asymmetries Seeded by High-Density Carbon-Ablator Nonuniformity in Experiments at the National Ignition Facility
Published in Physical review letters (15-01-2021)“…Inertial confinement fusion implosions must achieve high in-flight shell velocity, sufficient energy coupling between the hot spot and imploding shell, and…”
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14
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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15
Demonstration of High Performance in Layered Deuterium-Tritium Capsule Implosions in Uranium Hohlraums at the National Ignition Facility
Published in Physical review letters (28-07-2015)“…We report on the first layered deuterium-tritium (DT) capsule implosions indirectly driven by a "high-foot" laser pulse that were fielded in depleted uranium…”
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16
Measurement of Dark Ice-Ablator Mix in Inertial Confinement Fusion
Published in Physical review letters (30-12-2022)“…We present measurements of ice-ablator mix at stagnation of inertially confined, cryogenically layered capsule implosions. An ice layer thickness scan with…”
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17
Plasma stopping-power measurements reveal transition from non-degenerate to degenerate plasmas
Published in Nature physics (01-04-2020)“…Physically realized electron gas systems usually reside in either the quantum non-degenerate or fully degenerate limit, where the average de Broglie wavelength…”
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18
Measurements of the critical power for self-injection of electrons in a laser wakefield accelerator
Published in Physical review letters (20-11-2009)“…A laser wakefield acceleration study has been performed in the matched, self-guided, blowout regime producing 720 +/- 50 MeV quasimonoenergetic electrons with…”
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19
X-ray Thomson-scattering measurements of density and temperature in shock-compressed beryllium
Published in Physical review letters (20-03-2009)“…We present the first x-ray scattering measurements of the state of compression and heating in laser irradiated solid beryllium. The scattered spectra at two…”
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20
X-ray Thomson scattering absolute intensity from the f-sum rule in the imaginary-time domain
Published in Scientific reports (22-06-2024)“…We present a formally exact and simulation-free approach for the normalization of X-ray Thomson scattering (XRTS) spectra based on the f-sum rule of the…”
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