Shear AlfvÚn mode resonance in nonaxisymmetric toroidal low-pressure plasmas. II. Singular modes in the shear AlfvÚn continuum
The spatial dependence of modes in the shear AlfvÚn continuum of nonaxisymmetric toroidal magnetohydrodynarnic plasma equilibria of zero pressure is investigated theoretically. As in configurations with plane or axial symmetry it is found that these modes may exhibit a singularity extended across whole "singular" magnetic surfaces. However, with nonaxisymmetry in the zero pressure approximation a logarithmic singularity appears in general rather than the oscillatory singularity of an axisymmetric plasma. If the nonaxisymmetry is too strong, the surface-covering property of the singular modes may be lost.
Bibliographic Reference: An article published in: Physics of Plasmas. Vol.8, no.4 (2001) pp.1207-1217
Availability: An article published in: Physics of Plasmas. Vol.8, no.4 (2001) pp.1207-1217
Record Number: 200013446 / Last updated on: 2001-06-27
Original language: en
Available languages: en