Intermittent plasma transport across magnetic field lines

We present results from a comparative analysis of published data for plasma transport across magnetic field lines during big turbulences in Edge-Localized Mode (ELM). The phenomenon is characterized with periodic creation of blobs of dense plasma followed by propagation of filaments. The analysed data reveal an intrinsic electromagnetic mechanism of the transport. Here we analyse the effect of this mechanism on the temperature of magnetized plasma. The results confirm our conclusions concerning the evolution of ELMs derived from the computer simulations: particles drifting across magnetic field lines pile in blob-like structures in which the bouncing particles increase the temperature. The detached plasma reaches instable equilibrium with vanished electric field in the entire Scrape-Off-Layer (SOL). The steep density gradient in the pedestal causes small fluctuations to develop in bunches and leads to a fast collapse with propagation of filaments. The time of the ramp phase conforms ELM recreation time in experiment. The results from the present analysis show the effect of plasma self-organization on the temperature which explains the deviation from the predictions assuming diffusion transport.