Facultatea de Fizică
Universitatea "Al.I.Cuza" Iaşi
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| Titlu: The influence of the external circuit inductance on the nonlinear dynamics of a ball of fire in DP – machine plasma |
| Autori: Mihaela Ivan, George Amarandei, Mihaela Mihai-Plugaru, Cezar Gaman,
Dan-Gheorghe Dimitriu, Codrina Ionita1, Mihaela Dimitriu2,
Erzilia Lozneanu, Roman Schrittwieser1, Mircea Sanduloviciu |
| Afiliere: Faculty of Physics, “Al. I. Cuza” University of Iasi, Romania
1Institute of Ion Physics, “Leopold-Franzens” University of Innsbruck, Austria
2”Ion Holban” School Group, Iasi, Romania |
| Abstract: By applying a positive potential to an electrode immersed in a plasma, in front of it a complex space charge configuration (CSCC) bordered by a spherical double layer (DL) can appear. If the value of the potential on the electrode is large enough, the CSCC shows spatiotemporal dynamics related with the formation and disruption of the DL. The plasma system performs strongly nonlinear oscillations, characterised by the presence of many higher harmonics in their spectrum. But, for many applications, purely harmonic oscillations are required. The suppression of the higher harmonics is possible by modifying the inductance of the external electronic circuit. The oscillation frequency depends on the inductance according to Thomson's formula. |
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