Physical Review Letters · 2016 · 39 citations · 30 references
Natural SciencesNuclear EngineeringPhysicsOpticsPlasma PhysicsRadiation MeasurementDetector TechnologyHigh-temperature PlasmasLaser PhysicsLaser-plasma InteractionsRadiation InstrumentationX-ray DetectorsEnergy Conversion EfficiencyField Of ViewHigh-temperature RadiationHohlraum PhysicsLaser IgnitionRadiation Field CharacterizationScientific InvestigationShock Wave Interactions
The first spherical hohlraum energetics experiment is accomplished on the SGIII-prototype laser facility. In the experiment, the radiation temperature is measured by using an array of flat-response x-ray detectors (FXRDs) through a laser entrance hole at four different angles. The radiation temperature and M-band fraction inside the hohlraum are determined by the shock wave technique. The experimental observations indicate that the radiation temperatures measured by the FXRDs depend on the observation angles and are related to the view field. According to the experimental results, the conversion efficiency of the vacuum spherical hohlraum is in the range from 60% to 80%. Although this conversion efficiency is less than the conversion efficiency of the near vacuum hohlraum on the National Ignition Facility, it is consistent with that of the cylindrical hohlraums used on the NOVA and the SGIII-prototype at the same energy scale.
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The high-foot implosion campaign on the National Ignition Facility
O. A. Hurricane, D. A. Callahan, D. T. Casey et al. · Physics of Plasmas · 2014 · 167 citations
R. L. Kauffman, L. J. Suter, C. B. Darrow et al. · Physical Review Letters · 1994 · 166 citations