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Intrinsic rotation from a residual stress at the boundary of a cylindrical laboratory plasma.

  • Author(s): Yan, Z
  • Xu, M
  • Diamond, PH
  • Holland, C
  • Müller, SH
  • Tynan, GR
  • Yu, JH
  • et al.
Abstract

An azimuthally symmetric radially sheared azimuthal flow is driven by a nondiffusive, or residual, turbulent stress localized to a narrow annular region at the boundary of a cylindrical magnetized helicon plasma device. A no-slip condition, imposed by ion-neutral flow damping outside the annular region, combined with a diffusive stress arising from turbulent and collisional viscous damping in the central plasma region, leads to net plasma rotation in the absence of momentum input.

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