Measurements of Electrical Conductivity of MHD Plasmas with Four-Pin Probes.

Abstract

This work describes the development of a four-pin probe and associated electronic instrumentation for making time and space resolved measurements of electrical conductivity in MHD plasma flows. Measurements were made in 2000 K atmospheric-pressure potassium-seeded (0.1% by weight) argon flowing at velocities between 10 and 100 meters/sec. The results show a dependence of indicated conductivity on flow speed and probe orientation, so that calibration is necessary for high accuracy absolute conductivity determinations. The probe is well suited for time and space resolved relative conductivity fluctuation measurements, and for continuous display of time-averaged indicated conductivity. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 15, 1978
Accession Number
ADA055392

Entities

People

  • Nelson L. Hower

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Audio Frequency
  • Boundary Layer
  • Conductivity
  • Current Density
  • Drops
  • Electrical Conductivity
  • Electrical Measurement
  • Electron Density
  • Electronic Components
  • Electrons
  • Equations
  • Measurement
  • Plastic Explosives
  • Power Supplies
  • Signal Processing
  • Waveforms

Readers

  • Geodesy
  • Plasma Physics.

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster