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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4 p.

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Spong, D.A.; Carreras, B.A.; Jeboeuf, J-N.; Weller, A.; Nazikian, R. & Zweben, S.J. December 31, 1997.

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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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4 p.

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OSTI as DE98000131

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  • 5. IAEA technical committee meeting on alpha particles in fusion research, Abingdon (United Kingdom), 8-11 Sep 1997

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  • Other: DE98000131
  • Report No.: CONF-9709110--1
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 624028
  • Archival Resource Key: ark:/67531/metadc691259

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  • December 31, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 15, 2016, 12:41 p.m.

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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 October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.