A variational symplectic integrator for the guiding-center motion of charged particles in
general magnetic fields is developed for long-time simulation studies of magnetized …

A variational symplectic integrator for the guiding center motion of charged particles in
general magnetic fields is developed to enable accurate long-time simulation studies of …

In this work, we report a novel gyrokinetic simulation method named numerical Lie transform
(NLT), which depends on a new physical model derived from the I-transform theory. In this …

Nonlinear scattering term is found from the nonlinear gyrokinetic equation by decoupling the
perturbed gyrocenter motion from the unperturbed motion. The gyro-center distribution …

The effects of resonant magnetic perturbations (RMPs) and the magnetic drift on the loss
and redistribution of passing ions are investigated numerically by the upgrade version of the …

Monte Carlo orbit-following simulations based on a phase-space coordinate transform
method are presented in this paper. Guiding-center orbits are computed by using this …

Linear gyrokinetic theory based on the Lie-transform perturbation method is presented in
terms of the exact canonical variables. In the linear drift approximation, it is shown that the …

Charged particle dynamics in magnetosphere has temporal and spatial multiscale;
therefore, numerical accuracy over a long integration time is required. A variational …

Based on the semi-Lagrangian method, a δ f drift kinetic continuum code incorporating
magnetic flux coordinate was developed and applied to investigate the geodesic acoustic …

The nonlinear canonical gyrokinetic Vlasov equation is obtained from the nonlinear
noncanonical gyrokinetic theory using the property of the coordinate transform. In the linear …