@Article{CiCP-21-947,
author = {Cedric Schreiner, Patrick Kilian and Felix Spanier},
title = {Recovering the Damping Rates of Cyclotron Damped Plasma Waves from Simulation Data},
journal = {Communications in Computational Physics},
year = {2018},
volume = {21},
number = {4},
pages = {947--980},
abstract = {<p style="text-align: justify;">Plasma waves with frequencies close to the particular gyrofrequencies of
the charged particles in the plasma lose energy due to cyclotron damping. We briefly
discuss the gyro-resonance of low frequency plasma waves and ions particularly with
regard to particle-in-cell (PiC) simulations. A setup is outlined which uses artificially
excited waves in the damped regime of the wave mode&#39;s dispersion relation to track
the damping of the wave&#39;s electromagnetic fields. Extracting the damping rate directly
from the field data in real or Fourier space is an intricate and non-trivial task. We therefore
present a simple method of obtaining the damping rate Γ from the simulation
data. This method is described in detail, focusing on a step-by-step explanation of the
course of actions. In a first application to a test simulation we find that the damping
rates obtained from this simulation generally are in good agreement with theoretical
predictions. We then compare the results of one-, two- and three-dimensional simulation
setups and simulations with different physical parameter sets.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.OA-2016-0091},
url = {http://global-sci.org/intro/article_detail/cicp/11267.html}
}