Bremen 2017 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 22: Theory and Modelling II

P 22.11: Poster

Mittwoch, 15. März 2017, 16:30–18:30, HS Foyer

Spontaneous formation of temperature anisotropies in strongly coupled magnetized plasmas — •Torben Ott¹, Michael Bonitz¹, Peter Hartmann², and Zoltan Donkó² — ¹Institute for Theoretical Physics and Astrophysics, CAU, Kiel, Germany — ²Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Budapest, Hungary

We consider the effect of an external magnetic field on the thermal conduction properties of a strongly correlated plasma through molecular dynamics simulations [1]. A perturbation of the temperature equilibrium through a local, isotropic heating leads—above a critical magnetic field strength—to the spontaneous formation of a temperature anisotropy between the field-parallel and cross-field temperature components. It is shown that this behaviour is caused by the prolongation of the isotropization time scales due to the magnetic field. An extension of the heat equation with an isotropization term is able to reproduce the observed behaviour [2].
[1] T. Ott, M. Bonitz, and Z. Donkó, "Effect of correlations on heat transport in a magnetized strongly coupled plasma", Phys. Rev. E 92, 063105 (2015).

[2] T. Ott, M. Bonitz, P. Hartmann, and Z. Donkó, "Spontaneous generation of a temperature anisotropy in a strongly coupled magnetized plasma", to appear in Phys. Rev. E (2017)