A statistical analysis of the anomalous particle flux in the edge region of the RFX experiment has revealed that laminar times between bursts, which account for more than 50% of the losses, have a power law distribution and that flux fluctuations are not self-similar. These properties are found in contrast with a wide class of self-organized-criticality models so that it is concluded that there is no experimental evidence of avalanche-like process occurrence in the plasma of RFX.
Transport Processes in Reversed-Field-Pinch Plasmas:Inconsistency with the Self-Organized-Criticality Paradigm
V Antoni;N Vianello;E Martines;G Serianni;M Spolaore;
2001
Abstract
A statistical analysis of the anomalous particle flux in the edge region of the RFX experiment has revealed that laminar times between bursts, which account for more than 50% of the losses, have a power law distribution and that flux fluctuations are not self-similar. These properties are found in contrast with a wide class of self-organized-criticality models so that it is concluded that there is no experimental evidence of avalanche-like process occurrence in the plasma of RFX.File in questo prodotto:
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