Skip to main content
eScholarship
Open Access Publications from the University of California

Finding the elusive E×B staircase in magnetized plasmas.

  • Author(s): Dif-Pradalier, G
  • Hornung, G
  • Ghendrih, Ph
  • Sarazin, Y
  • Clairet, F
  • Vermare, L
  • Diamond, PH
  • Abiteboul, J
  • Cartier-Michaud, T
  • Ehrlacher, C
  • Estève, D
  • Garbet, X
  • Grandgirard, V
  • Gürcan, ÖD
  • Hennequin, P
  • Kosuga, Y
  • Latu, G
  • Maget, P
  • Morel, P
  • Norscini, C
  • Sabot, R
  • Storelli, A
  • et al.
Abstract

Turbulence in hot magnetized plasmas is shown to generate permeable localized transport barriers that globally organize into the so-called "ExB staircase" [G. Dif-Pradalier et al., Phys. Rev. E, 82, 025401(R) (2010)]. Its domain of existence and dependence with key plasma parameters is discussed theoretically. Based on these predictions, staircases are observed experimentally in the Tore Supra tokamak by means of high-resolution fast-sweeping X-mode reflectometry. This observation strongly emphasizes the critical role of mesoscale self-organization in plasma turbulence and may have far-reaching consequences for turbulent transport models and their validation.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View