Turbulent fluctuations in the main core of TFTR plasmas with negative magnetic shear

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Turbulent fluctuations in plasmas with reversed magnetic shear have been investigated in TFTR. Under intense auxiliary heating, these plasmas are observed to bifurcate into two states with different transport properties. In the state with better confinement, it has been found that the level of fluctuations is very small throughout most of the region with negative shear. By contrast, the state with lower confinement is characterized by large bursts of fluctuations which suggest a competition between the driving and the suppression of turbulence. These results are consistent with the suppression of turbulence by the ExB velocity shear.

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4 p.

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Mazzucato, E.; Beer, M. & Bell, M.G. April 1, 1997.

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Description

Turbulent fluctuations in plasmas with reversed magnetic shear have been investigated in TFTR. Under intense auxiliary heating, these plasmas are observed to bifurcate into two states with different transport properties. In the state with better confinement, it has been found that the level of fluctuations is very small throughout most of the region with negative shear. By contrast, the state with lower confinement is characterized by large bursts of fluctuations which suggest a competition between the driving and the suppression of turbulence. These results are consistent with the suppression of turbulence by the ExB velocity shear.

Physical Description

4 p.

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INIS; OSTI as DE97005294

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  • 16. International Atomic Energy Agency (IAEA) international conference on plasma physics and controlled nuclear fusion research, Montreal (Canada), 7-11 Oct 1996

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  • Other: DE97005294
  • Report No.: CONF-961005--30
  • Office of Scientific & Technical Information Report Number: 503482
  • Archival Resource Key: ark:/67531/metadc692502

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  • April 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 15, 2016, 6:55 p.m.

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Mazzucato, E.; Beer, M. & Bell, M.G. Turbulent fluctuations in the main core of TFTR plasmas with negative magnetic shear, article, April 1, 1997; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc692502/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.