Grishanov N. Dielectric properties of a collisionless plasma in the two-dimensional axisymmetric magnetic traps

Кinetic wave theory is developed in a collisionless plasma of such 2D systems as tokamaks (with large and small aspect ratio; circular, elliptic and D-shaped magnetic surfaces), Earth's magnetosphere, magnetospheric plasma in the laboratory conditions, cylindrical mirror traps. There are obtained the main contributions of untrapped and trapped particles to the longitudinal and transverse dielectric tensor components for waves in the above mentioned plasma models. There are studied the influence of bounce-resonances on the electron Landau damping of the Alfven and magnetosonic waves in the spherical tokamaks, cylindrical and magnetospheric plasmas. There are obtained the dispersion relations for field-aligned waves in 2D magnetospheric plasmas with anisotropic temperature. It is shown that the instability increment of the ion-cyclotron waves in the 2D magnetosphere is much less than the corresponding expression for models in the straight magnetic field. Тhe obtained results can be used for theoretical and experimental investigations, including the problems of nuclear fusion, Earth's magnetosphere and solar plasma.