@Article{CiCP-10-4,
author = {},
title = {Gyrokinetic Simulation of Magnetic Compressional Modes in General Geometry},
journal = {Communications in Computational Physics},
year = {2011},
volume = {10},
number = {4},
pages = {899--911},
abstract = {<p style="text-align: justify;">A method for gyrokinetic simulation of low frequency (lower than the cyclotron
frequency) magnetic compressional modes in general geometry is presented.
The gyrokinetic-Maxwell system of equations is expressed fully in terms of the compressional
component of the magnetic perturbation, δB<sub>‖</sub>, with finite Larmor radius effects.
This introduces a &quot;gyro-surface&quot; averaging of δB<sub><span style="font-size: 13.3333px; text-align: justify;">‖&nbsp;</span></sub>in the gyrocenter equations of
motion, and similarly in the perpendicular Ampere&#39;s law, which takes the form of the
perpendicular force balance equation. The resulting system can be numerically implemented
by representing the gyro-surface averaging by a discrete sum in the configuration
space. For the typical wavelength of interest (on the order of the gyroradius), the
gyro-surface averaging can be reduced to averaging along an effective gyro-orbit. The
phase space integration in the force balance equation can be approximated by summing
over carefully chosen samples in the magnetic moment coordinate, allowing for
an efficient numerical implementation.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.241110.280111a},
url = {https://global-sci.com/article/80947/gyrokinetic-simulation-of-magnetic-compressional-modes-in-general-geometry}
}