Nonlinear evolution of broad-bandwidth, laser-imprinted nonuniformities in planar targets accelerated by 351-nm laser light
- Laboratory for Laser Energetics, and Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623 (United States)
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
- Laboratory for Laser Energetics, Department of Mechanical Engineering, Department of Physics and Astronomy, University of Rochester, Rochester, New York 14623 (United States)
- Department of Physics, Nuclear Research Center Negev, Beer-Sheva (Israel)
Planar, 20 and 40 {mu}m thick CH targets have been accelerated by 351 nm laser beams of the OMEGA laser system [Opt. Commun. {bold 133}, 495 (1997)]. Different beam-smoothing techniques were employed including distributed phase plates, smoothing by spectral dispersion, and distributed polarization rotators. The Rayleigh{endash}Taylor evolution of three-dimensional (3D) broadband planar-target perturbations seeded by laser nonuniformities was measured using x-ray radiography at {approximately}1.3 keV. Fourier analysis shows that the perturbations evolve to longer wavelengths and the shorter wavelengths saturate. The saturation amplitudes and rates of growth of these features are consistent with the predictions of Haan [Phys. Rev. A {bold 39}, 5812 (1989)]. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 686545
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 6; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonlinear evolution of broad-bandwidth, laser-imprinted nonuniformities in planar targets accelerated by 351-nm laser light
Fourier-Space Nonlinear Rayleigh-Taylor Growth Measurements of 3D Laser-Imprinted Modulations in Planar Targets