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1966•Journal of Applied PhysicsRequires access

Comparison of Langmuir Probe and Spectrometric Electron Temperature Measurements

Robert S. Powers

Open publisher page 27 citations

Abstract

Langmuir probes, because of their convenience and their ability to give time-resolved measurements, are often used for temperature measurements in plasmas. Since probe results are subject to suspicion, we compare probe and spectrometric electron temperature measurements in a particular low-temperature plasma in which this is possible. We find probe temperatures to be significantly higher over an electron temperature range (measured spectrometrically) of at least 410° to 820°K.

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What this paper is about

Langmuir probes, because of their convenience and their ability to give time-resolved measurements, are often used for temperature measurements in plasmas. Since probe results are subject to suspicion, we compare probe and spectrometric electron temperature measurements in a particular low-temperature plasma in which this is possible. We find probe temperatures to be significantly higher over an electron temperature range (measured spectrometrically) of at least 410° to 820°K.

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Available abstract

Langmuir probes, because of their convenience and their ability to give time-resolved measurements, are often used for temperature measurements in plasmas. Since probe results are subject to suspicion, we compare probe and spectrometric electron temperature measurements in a particular low-temperature plasma in which this is possible. We find probe temperatures to be significantly higher over an electron temperature range (measured spectrometrically) of at least 410° to 820°K.

Key concepts: Langmuir probe, Electron temperature, Plasma diagnostics, Plasma, Temperature measurement, Atmospheric temperature range, Electron, Langmuir

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