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Abstract: Progress in the theory of anomalous diffusion in weakly turbulent coldmagnetized plasmas is explained. Several proposed models advanced in theliterature are discussed. Emphasis is put on a new proposed mechanism foranomalous diffusion transport mechanism based on the coupled action ofconductive walls excluding electrodes bounding the plasma drain current edgediffusion together with the magnetic field flux -cutting- the area traced bythe charged particles in their orbital motion. The same reasoning is shown toapply to the plasma core anomalous diffusion. The proposed mechanism isexpected to be valid in regimes when plasma diffusion scales as Bohm diffusionand at high $B-N$, when collisions are of secondary importance.



Author: Mario J. Pinheiro

Source: https://arxiv.org/







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