Results 141 to 150 of about 1,247 (174)

Gyrokinetic turbulent heating

Physics of Plasmas, 2006
Expressions for particle and energy fluxes and heating rates due to turbulence are derived. These fluxes and heating rates are identified from moments of an extended drift-kinetic equation for the equilibrium distribution function. These include neoclassical as well as turbulent diffusion and heating.
F. L. Hinton, R. E. Waltz
openaire   +1 more source

Gyrokinetic perpendicular dynamics

Physics of Plasmas, 1999
Gyrokinetic perpendicular dynamics, an important component not systematically considered in previous gyrokinetic theories, is identified and developed. A “distribution function” S and its governing gyrokinetic equation are introduced to describe the gyrokinetic perpendicular dynamics.
H. Qin, W. M. Tang, W. W. Lee, G. Rewoldt   +3 more
openaire   +1 more source

Exceptional points in linear gyrokinetics

Physics of Plasmas, 2008
When performing linear gyrokinetic simulations, it is found that various types of microinstabilities, which are usually considered as strictly separated, can actually be transformed into each other via continuous variations of the plasma parameters. This behavior can be explained in terms of so-called exceptional points, which have their origin in the ...
Kammerer, M., Merz, F., Jenko, F.
exaly   +3 more sources

Krylov–Boholiubov Methods and Gyrokinetics

Physica Scripta, 2001
Summary: The asymptotic theory of charged particle motion in electromagnetic fields is developed for the general case of finite Larmor-radius effects by means of the Krylov-Bogoliubov averaging method. The correspondence between the general asymptotic methods, elaborated by M. Krylov and M. Bogoliubov, the quasi-particle description and gyrokinetics is
Sosenko, Petro P., Bertrand, Pierre, Decyk, Viktor K.   +2 more
openaire   +2 more sources

Electromagnetic gyrokinetic simulations

Physics of Plasmas, 2004
A new electromagnetic kinetic electron δf particle simulation model has been demonstrated to work well at large values of plasma β times the ion-to-electron mass ratio [Y. Chen and S. E. Parker, J. Comput. Phys. 198, 463 (2003)]. The simulation is three-dimensional using toroidal flux-tube geometry and includes electron-ion collisions.
S. E. Parker, Y. Chen, W. Wan, B. I. Cohen, W. M. Nevins   +4 more
openaire   +1 more source

General frequency gyrokinetics

The Physics of Fluids, 1983
A gyrokinetic formalism is developed which enables a treatment of linear waves of arbitrary wave frequency ω for general magnetic field geometries. The treatment is an extension of previous gyrokinetic techniques which were restricted to the low-frequency (ω<Ω) regime.
Lee, X. S., Myra, J. R., Catto, Peter J.
openaire   +1 more source

An Eulerian gyrokinetic-Maxwell solver

Journal of Computational Physics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Candy, J., Waltz, R. E.
openaire   +1 more source

Conservative gyrokinetic Vlasov simulation

Communications in Nonlinear Science and Numerical Simulation, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Idomura, Yasuhiro, Ida, Masato, Tokuda, Shinji   +2 more
openaire   +1 more source

On the gyrokinetic equilibrium

Physics of Plasmas, 2000
Recent developments in gyrokinetic-magnetohydrodynamics (MHD) theory and in electromagnetic gyrokinetic particle simulations raise the question of consistency between the gyrokinetic model and the fluid model. Due to the special characteristics of the guiding center coordinates, it is a nontrivial exercise to show this consistency.
H. Qin, W. M. Tang, G. Rewoldt, W. W. Lee   +3 more
openaire   +1 more source

Linear relativistic gyrokinetic equation

The Physics of Fluids, 1984
The linear, relativistic gyrokinetic equation is derived, in a form appropriate for relativistic electrons in fusion research. The frequency of the perturbing wave satisfies ω≪Ωe. The use of generally covariant transformation rules, as well as first-order Hamiltonian perturbation theory, greatly simplifies the derivation.
openaire   +2 more sources