Turbulent transport in magnetic confinement: how to avoid it

@article{Binderbauer1996TurbulentTI,
  title={Turbulent transport in magnetic confinement: how to avoid it},
  author={Michl Binderbauer and Norman Rostoker},
  journal={Journal of Plasma Physics},
  year={1996},
  volume={56},
  pages={451 - 465}
}
From recent tokamak research, there is considerable experimental evidence that superthermal ions slow down and diffuse classically in the presence of turbulent fluctuations that cause anomalous transport of thermal ions. Further more, research on field-reversed configurations at Los Alamos is consistent with the view that kinetic effects suppress instability growth when the ratio of plasma radius to ion orbital radius is small; turbulence is enhanced and confinement degrades when this ratio… 

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References

SHOWING 1-10 OF 31 REFERENCES

Fusion Reactors Based on Colliding Beams in a Field Reversed Configuration Plasma

A plasma consisting of large orbit non-adiabatic ions and adiabatic electrons is considered. For such a plasma it is possible that the anomalous transport characteristic of Tokamaks can be avoided.

CORRIGENDUM: The behaviour of fast ions in tokamak experiments

Fast ions with energies significantly larger than the bulk ion temperature are used to heat most tokamak plasmas. Fast ion populations created by fusion reactions, by neutral beam injection and by

Magnetic fusion with high energy self-colliding ion beams

It seems likely that the design of a reactor featuring energetic self-colliding ion beams can be based on classical theory, and a confinement system that is much better than a tokamak is possible.

Kinetic Effects on the Convective Plasma Diffusion and the Heat Transport

Cross field heat and particle transport due to the thermally excited convective cell mode is investigated both by theoretical work and by particle simulations. A parameter range exists where the heat

Stability of annular equilibrium of energetic large orbit ion beam

The low‐frequency stability of a long thin annular layer of energetic ions in a background plasma with finite axial and zero azimuthal magnetic field is studied analytically. It is found that

Field reversed configurations

The review is devoted to field reversed configurations and to the related field reversed mirrors; both are compact toroids with little or no toroidal magnetic field. Experimental and theoretical

FISSION OF A HOT PLASMA

Then plasma formed in a fast B/sub z/ compression develops an instability after about a 4 to 5 mu sec quiescent period. Then consequence of the instability is that the plasma fissions into two well

Unstable Precession under the Influence of Drag Forces

Coherent precession of plasma particles in ▿B is generally subjected to drag forces associated with viscous or resistive energy dissipation in background plasma. The dissipated energy can be supplied

Propagation of an intense charge‐neutralized ion beam transverse to a magnetic field

It is shown experimentally that an intense, pulsed, charge‐neutralized proton beam (140 kV, 10 A/cm2, 800 nsec) will pass through a region of transverse magnetic field of up to 2 kG without being

Ideal stability of a toroidal confinement system without a toroidal magnetic field

New results show that a toroidal plasma can be ideally stable to gross modes without a toroidal magnetic field. Previous ideal‐magnetohydrodynamic (MHD) studies for such systems [commonly called