Fourier-Space Nonlinear Rayleigh-Taylor Growth Measurements of 3D Laser-Imprinted Modulations in Planar Targets

Journal Article · Sun Dec 04 23:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.215001· OSTI ID:861033

Smalyuk, V A ^[1]; Sadot, O; Delettrez, J A; Meyerhofer, D D; Regan, S P; Sangster, T C

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1. Laboratory for Laser Energetics

Nonlinear growth of 3-D broadband nonuniformities was measured near saturation levels using x-ray radiography in planar foils accelerated by laser light. The initial target modulations were seeded by laser nonuniformities and later amplified during acceleration by Rayleigh-Taylor instability. The nonlinear saturation velocities are measured for the first time and are found to be in excellent agreement with Haan predictions. The measured growth of long-wavelength modes is consistent with enhanced, nonlinear, long-wavelength generation in ablatively driven targets.

• Research Organization: Laboratory for Laser Energetics, University or Rochester, Rochester, NY
• Sponsoring Organization: USDOE
• DOE Contract Number: FC52-92SF19460
• OSTI ID: 861033
• Report Number(s): DOE/SF/19460-642; 1602; 2005-36
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Vol. 95
• Country of Publication: United States
• Language: English