Reflective Probing of the Electrical Conductivity of Hot Aluminum in the Solid, Liquid and Plasma Phases

Abstract

The physics of dense aluminum in transition between metallic and insulating states of the solid, liquid, and plasma phases is probed in thermally equilibrated, inertially confined, laser heated targets. Time resolved laser probes measure the reflectivity of thin aluminum layers embedded inside the target. The electrical conductivity is inferred from the reflectivity with a free-electron Drude conduction model. It is found to be sharply below liquid aluminum values and differs by at least an order of magnitude from current theoretical predictions.

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Document Details

Document Type
Technical Report
Publication Date
Nov 10, 1997
Accession Number
ADA331819

Entities

People

  • Andrew N. Mostovych
  • Yung Chan

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Conduction (Heat Transfer)
  • Conductivity
  • Electrical Conductivity
  • Electrons
  • Free Electrons
  • Liquid Metals
  • Measurement
  • Melting Point
  • Metal-Insulator Transitions
  • Metals
  • Military Research
  • Phase Transformations
  • Reflectivity
  • Refraction
  • Refractive Index
  • Thermal Diffusivity

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics
  • Microelectronics - Graphene