| Autor: |
Usoltceva M; Ghent University, 9000 Ghent, Belgium., Faudot E; Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France., Ledig J; Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France., Devaux S; Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France., Heuraux S; Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France., Zadvitskiy GV; Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France., Ochoukov R; Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany., Moritz J; Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France., Crombé K; Ghent University, 9000 Ghent, Belgium., Noterdaeme JM; Ghent University, 9000 Ghent, Belgium. |
| Abstrakt: |
A theory for data interpretation is presented for a cylindrical Langmuir probe in plasma parallel to the magnetic field direction. The theory is tested in a linear low-temperature plasma device Aline, in a capacitive radio-frequency (RF) discharge. The probe is placed on a 3D manipulator, and a position scan is performed. To exclude strong RF perturbations, the probe is RF compensated. Using the theory, electron densities are obtained from the current at the plasma potential, where no sheath is present. Results are calibrated by line-integrated density measurements of a 26.5 GHz microwave interferometer. Reasonable agreement is observed for probe and interferometer measurements. Furthermore, preceding, more general probe theory is compared to the one developed in the current work and the application limits are discussed. |
