Accurate Analytic Approximations and Numerical Solutions for the Structure of Quasi-Static Laser Driven Ablation Layers.

Abstract

Time dependent simulations of a laser driven accelerating shell ad ablation layer have shown the presence of long lived quasi-static density and pressure profiles. This paper models the equilibrium solutions for a laser ablation layer both analytically and numerically and develops a detailed understanding of the nature of this flow. Such a model enables the calculation of the quantitative dependence of the shell thickness and acceleration, the peak density, velocity, and temperature of the shell, the width of the Rayleigh-Taylor region, and the distance to the critical surface on the total plasma mass, the critical density, and the absorbed and reflected laser flow. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 29, 1980
Accession Number
ADA083913

Entities

People

  • Joseph H. Orens

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ablation
  • Boundaries
  • Classification
  • Coefficients
  • Conductivity
  • Critical Temperature
  • Differential Equations
  • Equations
  • Mach Number
  • Military Research
  • Numerical Integration
  • Physical Properties
  • Pressure Gradients
  • Security
  • Simulations
  • Steady State
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Molecular Photonics/Laser Physics

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition