What is it about?
A manual covering the basic setup and operation of Langmuir probes with all the equations, algorithms, and limitations needed for analysis. All common types of Langmuir probes (LPs) are included: single LPs, double LPs, triple LPs, mach LPs, RF compensated LPs, and high speed LPs (HDLPs).
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Why is it important?
The unique flowing plasma environment (plasma Mach numbers > 1) of electric propulsion plasmas requires the appropriate type of Langmuir probes and analysis.
Perspectives
Lots of electric propulsion studies have incorrectly setup, measured, and analyzed data with Langmuir probes owing in large part to the use of basic "textbook" probe theory that can easily become invalid in a supersonic plasma. This article provides all the information needed to properly acquire and process Langmuir probe data with electric propulsion thrusters.
Robert Lobbia
NASA
Read the Original
This page is a summary of: Recommended Practice for Use of Langmuir Probes in Electric Propulsion Testing, Journal of Propulsion and Power, May 2017, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.b35531.
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