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
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ABSTRACT: 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.
Physical Review Letters 04/2011; 106(16):165005. · 7.37 Impact Factor
