title: Isotope effect and multiscale physics in fusion plasmas.
abstract: The mechanism governing the impact of the mass isotope on plasma confinement is still one of the main scientific conundrums facing the magnetic fusion community after more than thirty years of intense research. We have investigated the properties of local turbulence and long-range correlations in hydrogen and deuterium plasmas in the TEXTOR tokamak. Experimental findings have shown a systematic increasing in the amplitude of long-range correlations during the transition from hydrogen to deuterium dominated plasmas. These results provide the first direct experimental evidence of the importance of multiscale physics for unraveling the physics of the isotope effect in fusion plasmas.
authors.affiliation: Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica, Ecole Royale Militaire-Koninklijke Militaire School, Trilateral Euregio Cluster, B-1000 Brussels, Belgium. y.xu@fz-juelich.de
authors.forename: Y
authors.initials: Y
authors.lastname: Xu
authors.forename: C
authors.initials: C
authors.lastname: Hidalgo
authors.forename: I
authors.initials: I
authors.lastname: Shesterikov
authors.forename: A
authors.initials: A
authors.lastname: Krämer-Flecken
authors.forename: S
authors.initials: S
authors.lastname: Zoletnik
authors.forename: M
authors.initials: M
authors.lastname: Van Schoor
authors.forename: M
authors.initials: M
authors.lastname: Vergote