The Behavior of Gridded Spherical and Planar Electron Probes in a Non- Maxwellian Plasma

Abstract

The responses of gridded spherical and planar electrostatic probes to plasmas with kappa type distribution functions are analyzed along lines developed by Mott-Smith and Langmuir. Specifically, consider a case that could be encountered when a satellite is in the outer reaches of the plasma-sphere. Practical rules are developed for calculating the plasma's spectral index (K), its mean thermal energy, and density. It is shown that treating the plasma as though it were Maxwellian, can lead to serious overestimates of the mean thermal energy but less serious overestimates of the electron density.

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Document Details

Document Type
Technical Report
Publication Date
Mar 16, 1978
Accession Number
ADA056961

Entities

People

  • Michael Smiddy
  • William J. Burke

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Analyzers
  • Angular Momentum
  • Artificial Satellites
  • Charged Particles
  • Detectors
  • Distribution Functions
  • Electron Density
  • Electron Gas
  • Electrons
  • Electrostatic Analyzers
  • Electrostatic Probes
  • Particles
  • Plasma Diagnostics
  • Probes
  • Spacecraft

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster