title: Scaling properties and intermittency of two-dimensional turbulence in pure electron plasmas.
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.
authors.affiliation: Dipartimento di Fisica, Università della Calabria, and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (CNISM), Unità di Cosenza, Ponte P. Bucci 31C, I-87036 Rende (CS), Italy. fabio.lepreti@fis.unical.it
authors.forename: F
authors.initials: F
authors.lastname: Lepreti
authors.forename: M
authors.initials: M
authors.lastname: Romé
authors.forename: G
authors.initials: G
authors.lastname: Maero
authors.forename: B
authors.initials: B
authors.lastname: Paroli
authors.forename: R
authors.initials: R
authors.lastname: Pozzoli
authors.forename: V
authors.initials: V
authors.lastname: Carbone