Perturbative studies of turbulent transport in fusion plasmas

One powerful way to investigate transport is to study the dynamic plasma response to externally applied small perturbations. This article describes the experimental techniques and basic theory underlying the perturbative approach. It then reviews the most recent results on electron heat transport and discusses their interpretation based on key concepts from electrostatic turbulence theory. Finally it presents some hints for future extensions of the work. To cite this article: P. Mantica, F. Ryter, C. R. Physique 7 (2006).