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Finite beta effects on tearing modes in the tokamak

1987; IOP Publishing; Volume: 27; Issue: 9 Linguagem: Inglês

10.1088/0029-5515/27/9/003

1741-4326

T. C. Hender, R. J. Hastie, D.C. Robinson,

Particle accelerators and beam dynamics

Details are given of a numerical study of finite-beta tearing modes in the tokamak. The linear compressible resistive MHD equations are solved in full toroidal geometry with no ordering assumptions. The results show a strong stabilizing effect as beta is increased, arising from the average curvature within the resistive layer. This stabilizing effect is particularly pronounced for high conductivity temperatures and small aspect ratios.