Scaling properties and intermittency of two-dimensional turbulence in pure electron plasmas
Articolo
Data di Pubblicazione:
2013
Citazione:
Scaling properties and intermittency of two-dimensional turbulence in pure electron plasmas / F. Lepreti, M. Romé, G. Maero, B. Paroli, R. Pozzoli, V. Carbone. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - 87:6(2013), pp. 063110.1-063110.9. [10.1103/PhysRevE.87.063110]
Abstract:
When the cold nonrelativistic guiding center approximation is valid, the transverse dynamics of highly magnetized
electron plasma columns confined in Penning-Malmberg traps is analogous to that of an incompressible, inviscid, two-dimensional (2D) fluid whose vorticity corresponds, up to a constant of proportionality, to the axially
averaged electron plasma density. In this work intermittency phenomena in the freely decaying 2D electron plasma
turbulence are investigated through scaling properties of the probability density functions and flatness of spatial vorticity increments, computed by analyzing the results of experiments performed in the Penning-Malmberg trap
ELTRAP. It is shown that the intermittency properties of the turbulence strongly depends on the initial conditions and the relation of these results to the dynamics of the system is discussed.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
F. Lepreti, M. Romé, G. Maero, B. Paroli, R. Pozzoli, V. Carbone
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