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Smith, D.R.; Kaye, S.M; Lee, W.; Mazzucato, E.; Park, H.K.; Bell, R.E.; Domier, C.W.; LeBlanc, B.P.; Levinton, F.M.; Luhmann Jr, N.C.; Menard, J.E.; Yu, H.
Princeton Plasma Physics Lab., Princeton, NJ (United States). Funding organisation: USDOE Office of Science (United States)2009
Princeton Plasma Physics Lab., Princeton, NJ (United States). Funding organisation: USDOE Office of Science (United States)2009
AbstractAbstract
[en] Electron gyro-scale fluctuation measurements in National Spherical Torus Experiment (NSTX) H-mode plasmas with large toroidal rotation reveal fluctuations consistent with electron temperature gradient (ETG) turbulence. Large toroidal rotation in NSTX plasmas with neutral beam injection generates E x B flow shear rates comparable to ETG linear growth rates. Enhanced fluctuations occur when the electron temperature gradient is marginally stable with respect to the ETG linear critical gradient. Fluctuation amplitudes decrease when the E x B flow shear rate exceeds ETG linear growth rates. The observations indicate E x B flow shear can be an effective suppression mechanism for ETG turbulence
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13 Feb 2009; 12 p; ACO2-09CH11466; Also available from OSTI as DE00950696; PURL: https://www.osti.gov/servlets/purl/950696-KQvigv/; doi 10.2172/950696
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