A Collisional-Radiative Model and Saha Decrements for a Nonequilibrium Oxygen Plasma

Abstract

Using a time dependent approach a collisional radiative model is developed for an oxygen plasma. Effective recombination and ionization coefficients are calculated for two specific cases, optically thin and optically thick in bound bound UV radiation. The steady state population densities for neutral and ionic states are presented in terms of their deviations from Saha equilibrium predictions. These results show the approach of the plasma to a state of local thermodynamic equilibrium (LTE) as a function of electron temperatures between 1.0 and 3.0 eV electron densities between 10 to the 16th power and 10 to the 19th power /cc Keywords: Collisional radiative model; Saha decrements; Oxygen plasma; Local thermodynamic equilibrium.

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Document Details

Document Type
Technical Report
Publication Date
May 20, 1986
Accession Number
ADA168010

Entities

People

  • A. W. Ali
  • R. D. Taylor

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Coefficients
  • Electron Density
  • Electrons
  • Emission
  • Energy Levels
  • Equations
  • Excitation
  • Experimental Data
  • Ground State
  • Ionization
  • Ionization Potentials
  • Low Temperature
  • Nitrogen
  • Radiation
  • Radiative Transfer
  • Steady State
  • Transitions

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Molecular Photonics/Laser Physics

Technology Areas

  • Microelectronics