Evaluation of Electron Energy Distribution Function in the IR-T1 Tokamak Edge Plasma
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Electron energy distribution function (EEDF) in the IR-T1 Tokamak edge plasma is measured. In this paper, application of the first derivative method for processing the electron part of I–V characteristics is report. This method is based on the kinetic theory in a non-local approach. Results show that in the confined plasma EEDF is not strictly Maxwellian and is Bi-Maxwellian. Also proposed procedure allows evaluating additional plasma parameters such as plasma potential in Tokamak edge plasma.
KeywordsTokamak plasma Electron energy distribution function Langmuir probe Plasma potential
The authors are grateful to IR-T1 tokamak group for skillful technical assistance.