First demonstration of improved capsule implosions by reducing radiation preheat in uranium vs gold hohlraums
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چکیده
منابع مشابه
Demonstration of High Performance in Layered Deuterium-Tritium Capsule Implosions in Uranium Hohlraums at the National Ignition Facility.
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 hohlraums at the National Ignition Facility. Recently, high-foot implosions have demonstrated improved resistance to ablation-front Rayleigh-Taylor instability induced mixing of ablator material into the DT hot spot [Hurricane et al., Natu...
متن کاملThree-Dimensional Modeling of Capsule Implosions in OMEGA Tetrahedral Hohlraums
90 LLE Review, Volume 82 Introduction To achieve ignition and gain in inertial confinement fusion (ICF), a spherical target must be compressed with a highly uniform drive mechanism.1–3 Perturbations in the drive can lead to a distorted fuel core as well as hydrodynamic instabilities, which cause the colder ablator material to mix with the fuel in the central hot spot, effectively quenching the ...
متن کاملMeasurement of Preheat due to Fast Electrons in Laser Implosions
LLE Review, Volume 82 63 Introduction Fast electrons due to the two-plasmon-decay (2PD) instability have been measured in previous laser-interaction experiments.1,2 The main impact of these electrons in laser-fusion experiments is the possible preheat that can reduce the implosion’s effectiveness. The preheat caused by these electrons is studied by measuring the Kα line emission from highZ laye...
متن کاملDemonstration of ignition radiation temperatures in indirect-drive inertial confinement fusion hohlraums.
We demonstrate the hohlraum radiation temperature and symmetry required for ignition-scale inertial confinement fusion capsule implosions. Cryogenic gas-filled hohlraums with 2.2 mm-diameter capsules are heated with unprecedented laser energies of 1.2 MJ delivered by 192 ultraviolet laser beams on the National Ignition Facility. Laser backscatter measurements show that these hohlraums absorb 87...
متن کاملHohlraum-driven high-convergence implosion experiments with multiple beam cones on the omega laser facility.
High-convergence implosion experiments have been performed on the Omega laser facility [T.R. Boehly, Opt. Commun. 133, 495 (1997)]] using cylindrical gold hohlraums with 40 drive beams arranged into multiple cones. These experiments make use of improved hohlraum radiation symmetry conditions [T.J. Murphy, Phys. Rev. Lett. 81, 108 (1998)]] to demonstrate near predicted primary (2.45 MeV) neutron...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2018
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.5039385