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Experimental Evidence of Periodic Pulling in a Weakly Magnetized Discharge Plasma Column
Author(s) -
Gyergyek T.,
Čerček M.,
Stanojević M.
Publication year - 1997
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.2150370503
Subject(s) - plasma , column (typography) , materials science , mechanics , atomic physics , physics , nuclear physics , mathematics , geometry , connection (principal bundle)
Dynamics of the PRI oscillations coupled to the externall harmonic oscillation is studied experimentally in a weakly magnetized discharge plasma column. Two characteristical phenomena, which are: synchronization and periodic pulling are observed. Experimental findings are compared to the approximate analytical and numerical solutions of the Van der Pol equation with the harmonic external force term: \documentclass{article}\pagestyle{empty}\begin{document}$ \frac{{d^2 n}}{{dt^2 }} - (\alpha - \beta n^2)\frac{{dn}}{{dt}} + \omega _0^2 n = A\omega _0^2 \cos (\omega _e t) $\end{document} . Relevance of the Van der Pol model for the PRI oscillations is confirmed.