Density Gradient Stabilization of Electron Temperature Gradient Driven Turbulence in a Spherical Tokamak | Zendy

Yanzhi Ren | Zendy; E. Mazzucato | Zendy; W. Guttenfelder | Zendy; R. E. Bell | Zendy; C. W. Domier | Zendy; B.P. LeBlanc | Zendy; K. C. Lee | Zendy; Neville C. Luhmann | Zendy; D. R. Smith | Zendy

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Density Gradient Stabilization of Electron Temperature Gradient Driven Turbulence in a Spherical Tokamak

Author(s) -

Yanzhi Ren,

E. Mazzucato,

W. Guttenfelder,

R. E. Bell,

C. W. Domier,

B.P. LeBlanc,

K. C. Lee,

Neville C. Luhmann,

D. R. Smith

Publication year - 2011

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1010967

Subject(s) - density gradient , temperature gradient , turbulence , tokamak , plasma , thermal diffusivity , electron temperature , electron density , electron , fusion , physics , wavelength , atomic physics , materials science , computational physics , mechanics , optics , thermodynamics , nuclear physics , meteorology , quantum mechanics , linguistics , philosophy

In this letter we report the first clear experimental observation of density gradient stabilization of electron temperature gradient driven turbulence in a fusion plasma. It is observed that longer wavelength modes, k⊥ρs ≤10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of two decrease in the plasma effective thermal diffusivity

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