Evaluation of a Foam Buffer Target Design for Spatially Uniform Ablation of Laser-Irradiated Plasmas

Abstract

Experimental observations are presented demonstrating that the use of a gold-coated foam layer on the surface of a laser-driven target substantially reduces its hydrodynamic breakup during the acceleration phase. The data suggest that this results from enhanced thermal smoothing during the early-time imprint stage of the interaction. The target's kinetic energy and the level of parametric instability growth are shown to remain essentially unchanged from that of a conventionally driven target.

References

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	Year	Citations
Two-Dimensional Simulation of Fluid Instability in Laser-Fusion Pellets J. D. Lindl, W. C. Mead Physical Review Letters Laser-fusion PelletsEngineeringMechanicsFluid MechanicsMechanical Engineering	1975	196
Calculations of the radiative opacity of laser-produced plasmas S. J. Rose Journal of Physics B Atomic Molecular and Optical Physics EngineeringPhysicsLaser Plasma PhysicsOptical PropertiesLocal Thermodynamic Equilibrium	1992	176
Single-mode and multimode Rayleigh–Taylor experiments on Nova B. A. Remington, S. V. Weber, M. M. Marinak, Physics of Plasmas EngineeringWave OpticMultimode Rayleigh–taylor ExperimentsRayleigh ScatteringPerturbation Evolution	1995	146
Rayleigh-Taylor instability growth rates in targets accelerated with a laser beam smoothed by induced spatial incoherence J. Grün, M. H. Emery, C. K. Manka, Physical Review Letters PhotonicsInduced Spatial IncoherenceEngineeringBeam OpticPhysics	1987	104
Wavelength Scaling for Reactor-Size Laser-Fusion Targets John H. Gardner, S. E. Bodner Physical Review Letters PhotonicsPellet ShellsSymmetric ImplosionPhysicsEngineering	1981	100
Hydrodynamic target response to an induced spatial incoherence-smoothed laser beam M. H. Emery, John H. Gardner, R. H. Lehmberg, Physics of Fluids B Plasma Physics EngineeringFluid MechanicsLaser-plasma InteractionLaser PhysicsLaser Applications	1991	96
Use of X-Ray Preheated Foam Layers to Reduce Beam Structure Imprint in Laser-Driven Targets M. Desselberger, M. W. Jones, John Edwards, Physical Review Letters Materials ScienceFoamAdvanced Laser ProcessingEngineeringLaser-driven Targets	1995	87
Laser-driven planar Rayleigh-Taylor instability experiments S. G. Glendinning, S. V. Weber, P. M. Bell, Physical Review Letters PhotonicsEngineeringLaser SciencePhysicsOptical Properties	1992	70
Supersonic Propagation of an Ionization Front in Low Density Foam Targets Driven by Thermal Radiation T. Afshar-rad, M. Desselberger, Mike Dunne, Physical Review Letters AeroacousticsEngineeringX-ray SpectroscopyIonization FrontSupersonic Propagation	1994	69
Nonuniformity imprint on the ablation surface of laser-irradiated targets M. Desselberger, T. Afshar-rad, F. Y. Khattak, Physical Review Letters Imprint PhenomenonEngineeringDensity RegionPhysicsMicroscopy	1992	64

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