Ion Temperature Measurement in a Flowing Collisionless Plasma Using an End Effect of Cylindrical Langmuir Probes.

Abstract

An experimental verification of the end effect theory of long cylindrical Langmuir probes in a high-speed collisionless plasma flow is reported. This effect is observed as a sharp departure from the predicted infinite probe current when a strongly negative probe is aligned with the flow. Both the height and the width of the ion current peak measured about the zero-degree attitude are strongly sensitive to ion temperature. The effect is verified for a mesothermal argon plasma with probe radius to Debye length ratio 0.005 < epsilon < 0.5 and for ion to electron temperature ratios close to unity.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1976
Accession Number
ADA033836

Entities

People

  • Hubert P. E. Mercure

Organizations

  • University of Toronto

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Charged Particles
  • Computational Science
  • Construction
  • Current Density
  • Electric Fields
  • Electron Emission
  • Electron Tubes
  • Electrons
  • Electrostatic Probes
  • Geometry
  • Glow Discharges
  • Ion Thrusters
  • Langmuir Probes
  • Mean Free Path
  • Measurement
  • Space Charge

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Control Systems Engineering.
  • Plasma Physics.

Technology Areas

  • Microelectronics