ALFVEN VORTICES IN MULTIION PLASMAS

The solar wind is known to be a turbulent medium. Further on observati onal evidence reveals a high degree of Alfvenicity of the fluctuations at least for the fast solar wind and also the existence of nonlinear two-dimensional turbulent interactions which contribute to solar wind fluctuations [Tu, C.-Y. and Marsch, E., Space Science Rev. 73, No. 1-2 (1995)]. To understand fluctuations which are existing in the solar w ind one has to study the behavior of nonlinear drift Alfven waves in m ulti-ion plasmas. For this reason we investigate the propagation of Al ven vortices in multi-ion plasmas. Vortices are structures of at leat two-dimensions which is also needed to understand turbulent motion. Al fven vortices were already applied to explain the observed phenomena i n the ionosphere and magnetosphere [Chmyrev, V. M. et al, Physica Scri pta 38, 841 (1988)]. The aim of the present work is to find the connec tion between the formation of Alfven vortices and the turbulent behavi or of the solar wind.