Magneto-hydrodynamically stable axisymmetric mirrorsa)
Magneto-hydrodynamically stable axisymmetric mirrorsa)
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DOI:
10.1063/1.3624763
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发表时间:
2010-11
影响因子:
2.2
通讯作者:
D. Ryutov;H. Berk;B. Cohen;A. Molvik;T. Simonen
中科院分区:
文献类型:
--
作者:
D. Ryutov;H. Berk;B. Cohen;A. Molvik;T. Simonen
Making axisymmetric mirrors magnetohydrodynamically (MHD) stable opens up exciting opportunities for using mirror devices as neutron sources, fusion-fission hybrids, and pure-fusion reactors. This is also of interest from a general physics standpoint (as it seemingly contradicts well-established criteria of curvature-driven instabilities). The axial symmetry allows for much simpler and more reliable designs of mirror-based fusion facilities than the well-known quadrupole mirror configurations. In this tutorial, after a summary of classical results, several techniques for achieving MHD stabilization of the axisymmetric mirrors are considered, in particular: (1) employing the favorable field-line curvature in the end tanks; (2) using the line-tying effect; (3) controlling the radial potential distribution; (4) imposing a divertor configuration on the solenoidal magnetic field; and (5) affecting the plasma dynamics by the ponderomotive force. Some illuminative theoretical approaches for understanding axisymm...