Novel Langmuir probe technique for the real-time measurement of the electron temperature
- 1 July 1988
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 59 (7) , 1053-1056
- https://doi.org/10.1063/1.1139724
Abstract
A new method for the evaluation of the electron temperature from the voltage–current characteristic of a single Langmuir probe under the application of an ac signal was developed and tested. This method exploits harmonics in the current spectrum which arise from the nonlinearity of the characteristic; from the amplitude of these harmonics the electron temperature can be deduced. Langmuir probe measurements on the TEXTOR edge plasma show a good agreement of the new method with the conventional one. The advantages of this method over other methods are discussed. Proposals for further improvements are given.Keywords
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