Fluctuations of the magnetically-supported dc discharge in coaxial configuration |
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Authors: | O. Bilyk,A. Marek,M. Tichý |
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Affiliation: | a Faculty of Mathematics and Physics, Department of Electronics and Vacuum Physics, Charles University in Prague, V Holešovi?kách 2, 180 00 Praha 8, Czech Republicb Institute of Physics, EMA University, Domstrasse 10a, 17487 Greifswald, Germany |
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Abstract: | Floating potential fluctuations have been studied in DC discharge plasma in two cylindrical magnetron systems using the data from single and double cylindrical Langmuir probes. The power spectral density was calculated from the experimental data in the range of magnetic fields 15-35 mT and at different pressures and probe axial positions within the discharge vessel. Plots of power spectral density vs frequency and vs wave number are presented. The possible mechanism of generation of observed fluctuations in relation to their measured properties is discussed. |
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Keywords: | Fluctuations Magnetron Langmuir probe Power density spectrum |
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