Within the framework of fundamental studies on self-organization processes in magnetized plasmas, various turbulent transport processes, which on the one hand drive the particle transport across the magnetic field and on the other hand can reduce it, are related to each other. Both types of processes are presumably in competition. This work sheds light on the detailed dependence of turbulent particle transport on shear flows – either self-excited through momentum transport or imposed by external control – and provides the basis for the understanding of improved magnetic plasma confinement, which is of particular importance for hot fusion plasmas. For this purpose, the IGVP operates its own plasma confinement experiment TJ-K at the University of Stuttgart.
The thesis involves experimental work in combination with the application of sophisticated data analysis methods in the field of plasma turbulence.