Alpha-Driven Alfven Instabilities and Velocity Shear Effects
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Description
Energetic particle populations such as fusion alphas, beams and RF tails can drive a wide variety of shear Alfven instabilities in toroidal confinement systems. These instabilities lead to enhanced loss of fast ions and decreased heating efficiencies. Our gyrofluid stability model has recently been extended to include sheared plasma flow velocities. We also discuss recent results from applying this model to ITER, TFTR, and W7-AS.
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Oak Ridge National Lab., TN (United States)
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Tennessee
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Description
Energetic particle populations such as fusion alphas, beams and RF tails can drive a wide variety of shear Alfven instabilities in toroidal confinement systems. These instabilities lead to enhanced loss of fast ions and decreased heating efficiencies. Our gyrofluid stability model has recently been extended to include sheared plasma flow velocities. We also discuss recent results from applying this model to ITER, TFTR, and W7-AS.
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Spong, D.A.; Carreras, B.A.; Jeboeuf, J-N.; Weller, A.; Nazikian, R. & Zweben, S.J.Alpha-Driven Alfven Instabilities and Velocity Shear Effects,
article,
December 31, 1997;
Tennessee.
(digital.library.unt.edu/ark:/67531/metadc691259/:
accessed February 15, 2019),
University of North Texas Libraries, Digital Library, digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.