Structure Formation in Turbulent Plasmas

Asymmetry-driven structure formation in pair plasmas.

The nonlinear propagation of electromagnetic waves in pair plasmas, in which the electrostatic potential plays a very important but subdominant role of a "binding glue" is investigated. Several mechanisms for structure formation are investigated, in particular, the "asymmetry" in the initial temperatures of the constituent species. It is shown that the temperature asymmetry leads to a (localizi...

Turbulent edge structure formation in complex configurations

Electrostatic turbulent structures in TORPEX plasmas

Experimental data from many Tokamaks suggest that an important fraction of radial particle and heat transport in the Scrape-Off-Layer is due to poloidally-localized propagating structures of increased plasma density (blobs). A better understanding of the mechanism leading to blobs might help to lower the radial transport and control damages to plasma facing components. Such structures are exper...

The Anomalous Transport in Turbulent Plasmas

The particle and energy transport was analyzed for different regions and regimes of the plasma in tokamak with special attention for ITER. For the particle transport in the tokamak edge plasma was obtained results useful for the qualitative cross-check of the numerical models of the first principle simulations, including ITER, as well as in the elaboration of the simplified, reduced models of t...

Turbulent Cascades in 3d Incompressible Plasmas

This report surveys mathematical results related to plasma turbulence obtained while supported by the VSGC Graduate Research Fellowship. The solar-wind and interstellar medium are highly turbulent plasmas exhibiting certain features ubiquitous across present numerical and phenomenological theories. The objective of the present research is to provide a rigorous validation of such aspects of thes...