Two-dimensional turbulence in pure-electron plasma: A nonextensive thermostatistical description

Huang and Driscoll (1994) studied the two-dimensional turbulent metaequilibrium state that appears in an experiment in which pure-electron plasma evolves in the interior of a conducting cylinder (of radius Rw) in the presence of an external axial magnetic field. They measured the electron radial distribution and compared their data with the profiles resulting from four different phenomenological theories developed by themselves. Two among these theories are based on the optimization of the standard (Boltzmann-Gibbs) entropy, the other two being based on the optimization of the enstrophy. Only one of the latter (Restricted Minimum Enstrophy theory, where restricted stands for the fact that a cut-off radius Rc 12, q = 12 and q < 12, respectively.

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