Rayleigh-Taylor Instability in a Layered Laser-Driven Target.

Abstract

Growth rates of Rayleigh-Taylor modes, particularly those of long wavelength, are reduced at fluid interfaces in inhomogeneous laser-driven targets by the density gradients occurring naturally as a result of the acceleration. Growth rates can be reduced further by interposing layers of intermediate density at unstable interfaces between layers of high and low density, and by fabricating target layers with favorable density gradients between discontinuities. An approximate closed form expression for the growth rate of fluid instabilities in a multi-layered laser-driven target is presented. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1977
Accession Number
ADA047806

Entities

People

  • F. S. Felber

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ablation
  • Ablative Materials
  • Boundaries
  • Discontinuities
  • Equations
  • Fluids
  • Heat Flux
  • High Density
  • Instability
  • Laser Targets
  • Long Wavelengths
  • Low Density
  • Materials
  • Military Research
  • Rayleigh Taylor Instability
  • Steady State
  • Stratified Fluids

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Directed Energy - Pulsed-Laser Deposition