Formation of Collisionless High-β Plasmas by Odd-parity Rotating Magnetic Fields
Authors: S.A. Cohen, B. Berlinger, C. Brunkhorst, A. Brooks, N. Ferraro, D.P. Lundberg, A. Roach, and A.H. Glasser
Abstract:
Odd-parity rotating magnetic fields (RMFo) applied to
mirror-configuration plasmas have produced average electron energies exceeding 200 eV at line-averaged electron densities of ~1012 cm−3.
These plasmas, sustained for over 103τAlfven, have low Coulomb collisionality, ν*(over)c ≡ L⁄λC~ 10–3, where λC is the Coulomb scattering mean-free-path and L is the plasma’s characteristic half length. Divertors allow reduction of the electron-neutral collision frequency to values where the RMFo coupling indicates full penetration of the RMFo to the major axis.
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Published in: Physical Review Letters 14, 145002 (April 2007)
doi: 10.1103/PhysRevLett.98.145002
© 2007 by The American Physical Society
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Download PPPL-4229 Preprint March 2007 (pdf 1.4 Mb)
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Presented at:
Innovative Confinement Concepts Workshop (ICC2007), 12–15 February 2007, University of Maryland, College Park, Maryland, USA: Conference Proceedings (abstract)
Forty-Eighth Annual Meeting of the APS Division of Plasma Physics (2006), 30 October –3 November 2006, Philadelphia, Pennsylvania USA, Session Q02