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Density gradient stabilization of electron temperature gradient driven turbulence in a spherical tokamak. | LitMetric
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Density gradient stabilization of electron temperature gradient driven turbulence in a spherical tokamak.

Y Ren S M Kaye E Mazzucato W Guttenfelder R E Bell C W Domier B P LeBlanc K C Lee N C Luhmann D R Smith H Yuh

Phys Rev Lett

Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.

Published: April 2011

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(⊥)ρ(s) ≲ 10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of 2 decrease in the plasma effective thermal diffusivity.

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http://dx.doi.org/10.1103/PhysRevLett.106.165005DOI Listing

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