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Area of Science:

  • Plasma Physics
  • Diagnostic Techniques

Background:

  • Plasma diagnostics are crucial for understanding plasma behavior.
  • Flush-mounted probes (FP) and cylindrical probes (CP) are common diagnostic tools.

Purpose of the Study:

  • To compare plasma parameter measurements between FP and CP.
  • To validate the reliability of FP for plasma diagnostics.

Main Methods:

  • Argon glow discharge plasma generation.
  • Measurement of plasma parameters using FP and CP.
  • Comparison of space potential, plasma density, and electron temperature.

Main Results:

  • FP ion density agreed with CP electron density within 10% in quasi-neutral plasma.
  • FP-derived space potential and electron temperature matched CP measurements.
  • Consistency observed across various discharge currents and pressures.

Conclusions:

  • The flush-mounted probe (FP) is a reliable diagnostic tool for stable laboratory plasmas.
  • FP shows potential for application in complex plasma environments like tokamaks and boundary layers.