title: Short-scale turbulent fluctuations driven by the electron-temperature gradient in the national spherical torus experiment.
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 perpendicular rho(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.
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA. mazzucato@pppl.gov
authors.forename: E
authors.initials: E
authors.lastname: Mazzucato
authors.forename: D R
authors.initials: DR
authors.lastname: Smith
authors.forename: R E
authors.initials: RE
authors.lastname: Bell
authors.forename: S M
authors.initials: SM
authors.lastname: Kaye
authors.forename: J C
authors.initials: JC
authors.lastname: Hosea
authors.forename: B P
authors.initials: BP
authors.lastname: LeBlanc
authors.forename: J R
authors.initials: JR
authors.lastname: Wilson
authors.forename: P M
authors.initials: PM
authors.lastname: Ryan
authors.forename: C W
authors.initials: CW
authors.lastname: Domier
authors.forename: N C
authors.initials: NC
authors.lastname: Luhmann
authors.forename: H
authors.initials: H
authors.lastname: Yuh
authors.forename: W
authors.initials: W
authors.lastname: Lee
authors.forename: H
authors.initials: H
authors.lastname: Park