Kiel 2011 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 18: Poster: Theorie/Simulation dichter und stark gekoppelter Plasmen
P 18.18: Poster
Mittwoch, 30. März 2011, 16:30–18:30, Foyer
Nonlinear magnetoplasmons in strongly coupled Yukawa and Coulomb plasmas — •Torben Ott1, Michael Bonitz1, Zoltan Donkó2, and Peter Hartmann2 — 1Christian-Albrechts-Universität Kiel, Institut für Theoretische Physik und Astrophysik — 2Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, Budapest
The wave spectra of magnetized and strongly coupled 2D-Yukawa plasmas have recently been computed numerically [1] and good agreement between existing theories and the simulation was found. The magnetized Yukawa plasma sustains two modes, the magnetoplasmon and the magnetophonon, the frequencies of which are of the order of the Einstein or cyclotron frequency.
In this contribution, we report on the existence of additional high-frequency plasma oscillations at multiples of the magnetoplasmon, based on extensive molecular dynamics simulations. The emergent modes are reminiscent of the well-known Bernstein modes but are renormalized by the strong interparticle correlations. We present detailed numerical results and an analytical explanation of the observed features [2].
[1] Hou et al., Phys. Plas., 16, 73704 (2009)
[2] Bonitz et al., Phys. Rev. Lett., 105, 055002 (2010)