Publication Type
Journal
Journal Name
Physical Review Letters
Publication Date
Volume
101
Issue
7
Abstract
Measurements with coherent scattering of electromagnetic waves in plasmas of the National Spherical
Torus Experiment indicate the existence of turbulent fluctuations in the range of wave numbers k?e 0:1–0:4, corresponding to a turbulence scale length nearly equal to the collisionless skin depth.
Experimental observations and agreement with numerical results from a linear gyrokinetic stability
code support the conjecture that the observed turbulence is driven by the electron-temperature gradient.