Density Gradient Stabilization of Electron Temperature Gradient Driven Turbulence in a Spherical Tokamak

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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⊥ρs ≤10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of two decrease in the plasma effective thermal diffusivity.

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Ren, Y; Mazzucato, E; Guttenfelder, W; Bell, R E; Domier, C W; LeBlanc, B P et al. March 21, 2011.

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Description

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⊥ρs ≤10, are most stabilized by density gradient, and the stabilization is accompanied by about a factor of two decrease in the plasma effective thermal diffusivity.

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  • Physical Review Letters (December 2010)

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  • Report No.: PPPL-4607
  • Grant Number: DE-ACO2-09CH11466
  • DOI: 10.2172/1010967 | External Link
  • Office of Scientific & Technical Information Report Number: 1010967
  • Archival Resource Key: ark:/67531/metadc837260

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  • March 21, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 3:04 p.m.

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Ren, Y; Mazzucato, E; Guttenfelder, W; Bell, R E; Domier, C W; LeBlanc, B P et al. Density Gradient Stabilization of Electron Temperature Gradient Driven Turbulence in a Spherical Tokamak, report, March 21, 2011; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc837260/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.