Quasi-linear evolution of tearing modes

R. Pellat , M. Frey , Michel Tagger

The growth of a tearing instability in Rutherford's non-linear regime is investigated. Using a singular perturbations technique, we recover to lowest order Rutherford's result. To the following order we show that the mode generates a quasi-linear deformation of the equilibrium flux profile, whose resistive diffusion slows down the growth and shows the possibility of a saturation of the instability.

Mots clés: plasma instability; plasma theory

Domaines: Articles anciens

R. Pellat, M. Frey, Michel Tagger. Quasi-linear evolution of tearing modes. Journal de Physique, 1984, 45 (10), pp.1615-1625. ⟨10.1051/jphys:0198400450100161500⟩. ⟨jpa-00209903⟩