Phenomena observed in laboratory plasmas relevant for the so-called anomalous transport observed in plasma devices

摘要

The storage of matter and energy in confined plasma configurations is limited by an intermittent loss of particles and energy, usually referred to as anomalous transport. For tentatively explaining this phenomenon, we present in this paper experimental evidence of intermittent shelling off of electrical double layers generated at the border of confined plasma following a self-organization scenario. Moving against the electrons kinetic energy gradient, these structures enable the anomalous transport of matter and energy from the plasma to the surrounding. Our study can be related to the flicker noise observed in fusion devices, phenomenon associated with the loss of particles and energy from confined plasma.