title: Transitions to spatiotemporal chaos and turbulence of flute instabilities in a magnetized plasma.
abstract: The spatiotemporal transition scenario of flute instabilities from a regular to a turbulent state is experimentally investigated in the plasma column of a thermionic discharge. The same transition scenario, i.e., the Ruelle-Takens route to turbulence, is found for both the Kelvin-Helmholtz and the Rayleigh-Taylor instabilities. It is demonstrated that the transition can be more or less smooth, according to the discharge mode. In both cases, a strong radial dependence is observed, which is linked to the velocity shear layer in the case of the Kelvin-Helmholtz instability.
authors.affiliation: LPMIA, UMR 7040 du CNRS, Université Henri Poincaré, Boîte Postale 239, F-54506 Vandoeuvre-les-Nancy Cedex, France. frederic.brochard@lpmi.uhp-nancy.fr
authors.forename: F
authors.initials: F
authors.lastname: Brochard
authors.forename: E
authors.initials: E
authors.lastname: Gravier
authors.forename: G
authors.initials: G
authors.lastname: Bonhomme