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

doi:10.1103/PhysRevLett.106.165005

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

PPPL NSTX

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

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, _kρ_s10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of 2 decrease in the plasma effective thermal diffusivity.

Original language	English (US)
Article number	165005
Journal	Physical review letters
Volume	106
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.106.165005
State	Published - Apr 22 2011

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.106.165005

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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, kρs10, 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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AU - Ren, Y.

AU - Kaye, S. M.

AU - Mazzucato, E.

AU - Guttenfelder, W.

AU - Bell, R. E.

AU - Domier, C. W.

AU - Leblanc, B. P.

AU - Lee, K. C.

AU - Luhmann, N. C.

AU - Smith, D. R.

AU - Yuh, H.

PY - 2011/4/22

Y1 - 2011/4/22

N2 - 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, kρs10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of 2 decrease in the plasma effective thermal diffusivity.

AB - 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, kρs10, 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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U2 - 10.1103/PhysRevLett.106.165005

DO - 10.1103/PhysRevLett.106.165005

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JO - Physical review letters

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ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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