LOCALIZATION AND VORTICES IN STRONGLY MAGNETIZED PLASMAS

The properties of low frequency dynamics of electrostatic fluctuations in strongly magnetized plasmas have been studied, with particular att ention to localization of the fluctuation amplitudes. A model based on a few isolated vortical structures is analyzed, with particular atten tion to vortex collapse, where three vortices merge together within a finite time, or to the converse process, i.e. a vortex explosion. Deta ils of these particular types of vortex dynamics depend on the actual model used for describing the electrons, the presence of a Debye shiel ding in particular. For shielded vortices a ''boomerang''-type of inte raction is found.