Title :
The influence of 3D inhomogeneity of external magnetic field on dispersion properties of low-frequency MHD waves in stellarator
Author :
Girka, I.O. ; Kovtun, P.K.
Author_Institution :
Kharkov State Univ., Ukraine
Abstract :
The report is devoted to studying the effect of three-dimensional (3D) inhomogeneity of the external steady magnetic field B¯0 on dispersion properties of magnetohydrodynamic (MHD) waves in a stellarator. As far as the helical magnetic field is usually weak as compared with the axial one then we can use a perturbation technique to solve the problem. The inhomogeneity of B¯0 is shown to result in the weak shift δω of the MHD waves´ eigenfrequency ω,ω=ω0+δω, where ω0 is the eigenfrequency determined in the zeroth approximation
Keywords :
dispersion (wave); eigenvalues and eigenfunctions; magnetohydrodynamic waves; perturbation theory; plasma Alfven waves; plasma electromagnetic wave propagation; stellarators; 3D inhomogeneity; dispersion properties; eigenfrequency; external magnetic field; helical magnetic field; inhomogeneity; low-frequency MHD waves; perturbation technique; stellarator; zeroth approximation; Electromagnetic scattering; Frequency; Magnetic fields; Magnetic properties; Magnetohydrodynamics; Plasma density; Plasma devices; Plasma properties; Plasma waves; Toroidal magnetic fields;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 1998. MMET 98. 1998 International Conference on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-4360-3
DOI :
10.1109/MMET.1998.709847
