A Gyrokinetic Simulation Model for Low Frequency Electromagnetic Fluctuations in Magnetized Plasmas

Liu Chen; Haotian Chen; Fulvio Zonca; Yu Lin

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arXiv · 2011.09432

A Gyrokinetic Simulation Model for Low Frequency Electromagnetic Fluctuations in Magnetized Plasmas

Liu Chen·Haotian Chen·Fulvio Zonca·Yu Lin

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Abstract

We present a new model for simulating the electromagnetic fluctuations with frequencies much lower than the ion cyclotron frequency in plasmas confined in general magnetic configurations. This novel model (termed as GK-E&B) employs nonlinear gyrokinetic equations formulated in terms of electromagnetic fields along with momentum balance equations for solving fields. It, thus, not only includes kinetic effects, such as wave-particle interaction and microscopic (ion Larmor radius scale) physics; but also is computationally more efficient than the conventional formulation described in terms of potentials. As a benchmark, we perform linear as well as nonlinear simulations of the kinetic Alfven wave; demonstrating physics in agreement with the analytical theories.

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Liu Chen, Haotian Chen, Fulvio Zonca, Yu Lin. 2020-11-18. A Gyrokinetic Simulation Model for Low Frequency Electromagnetic Fluctuations in Magnetized Plasmas. https://arxiv.org/abs/2011.09432

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