Circuit for the Display of Langmuir Probe Characteristics

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Abstract
The use of Langmuir probes for plasma measurements usually entails laborious graphical reduction of data to obtain the electron temperature, and errors are often introduced by drift in the plasma characteristics while the measurements are being taken. This paper describes a simple and accurate electronic device for reducing the probe data and displaying the results on an oscilloscope. The circuit employs commercially available plug‐in amplifiers to provide maximum ease of construction, and high accuracy is obtained with a minimum of calibration adjustments.

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