München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 5: Helmholtz Graduate School I

P 5.4: Vortrag

Montag, 18. März 2019, 15:20–15:45, HS 21

Gyrokinetic Vlasov-Maxwell equations from variational averaging — •Edoardo Zoni1,2 and Stefan Possanner1,21Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany — 2Technische Universität München, Zentrum Mathematik, 85748 Garching, Germany

Nonlinear gyrokinetics is the major formalism used in theoretical and numerical studies of low-frequency microturbulence in magnetized fusion plasmas. A set of gyrokinetic Vlasov-Maxwell equations is derived with the method of variational averaging (Possanner, 2018) in a field-theoretic framework, without relying on the more complex mathematical formalism of Lie transform perturbation theory. The gyrokinetic ordering considered in this work is obtained by introducing a rigorous normalization scheme for the Vlasov-Maxwell equations and looking at physical scenarios relevant for realistic fusion devices. The gauge invariance of the resulting gyrokinetic model is also discussed.

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