Results 231 to 240 of about 39,674 (273)

Rotation of a classical toroidal plasma

The Physics of Fluids, 1980
The toroidal and poloidal velocity components of an axisymmetric toroidal plasma are calculated using the classical formulae of stress tensors in the magnetohydrodynamic equations. Explicit formulae are obtained and a criterion regarding whether the toroidal velocity component is exponentially increasing or decaying is established.
Wen, Shih-liang, Pao, Young-ping
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Plasma rotation and toroidal drift modes

Plasma Physics and Controlled Fusion, 1996
This paper discusses the structure of drift waves in a rotating toroidal plasma. The rotation destroys an underlying symmetry that is the basis for the conventional ballooning representations of perturbations in a torus and alternative descriptions are needed. One such description exploits the residual symmetry that persists despite rotation.
J B Taylor, H R Wilson
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On rotation of collisional plasmas in toroidal systems

Plasma Physics and Controlled Fusion, 1995
This paper describes the poloidal and toroidal spin-up of an isothermal plasma in toroidal equilibria. The mechanism is the Stringer spin-up mechanism which will be generalized to an arbitrary toroidal equilibrium using the Hamada coordinate system. Viscous damping or magnetic pumping balances the accelerating forces and determines the threshold of ...
Wobig, H., Kisslinger, J.
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Vortices for a Rotating Toroidal Bose–Einstein Condensate

Archive for Rational Mechanics and Analysis, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alama, Stan, Bronsard, Lia, Montero, J. Alberto   +2 more
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Effect of shear in toroidal rotation on toroidicity induced Alfven eigenmodes

Nuclear Fusion, 1997
It is found that low-n toroidicity induced Alfven eigenmodes (TAEs) excited by ion cyclotron resonance heating can be stabilized by counter-tangential neutral beam injection in JT-60U. The deformation of the radial structure of the TAE mode due to the shear in toroidal rotation is a plausible stabilizing mechanism. This mechanism is also expected to be
M Saigusa, Y Kusama, T Ozeki, H Kimura, T Fujita, S Moriyama, T Fujii, M Azumi, V.I Afanassiev, Y Neyatani, G.Y Fu, C.Z Cheng   +11 more
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Self-similar rotation of a toroidal plasma configuration

Doklady Physics, 2003
The author finds automodel solution of non-stationary, two-dimensional magnetohydrodynamic equations. This solution describes the dependence on time of a toroidal configuration of rotating plasma with respect to plasma current, plasma pressure and external magnetic field value.
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Toroidal Rotation in RF Heated JET Plasmas

AIP Conference Proceedings, 2007
Experiments have been carried out on JET aimed at studying rotation in RF heated plasmas with low external momentum input. Both plasmas with Ion Cyclotron Resonance Frequency (ICRF) heating and Lower Hybrid Current Drive (LHCD) have been investigated.
L.-G. Eriksson, T. Hellsten, F. Nave, J. Brzozowski, K. Holmström, T. Johnson, J. Ongena, K.-D. Zastrow, Philip M. Ryan, David Rasmussen   +9 more
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Ballooning stability of a toroidally rotating plasma

Nuclear Fusion, 1989
The stability of high (m, n) ideal ballooning modes in a toroidal plasma experiencing a rigid rotation about its axis of symmetry is investigated. Centrifugal forces induce poloidal asymmetry in the plasma pressure and affect the position and form of the magnetic surfaces.
A. Sen, A.K. Sundaram
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Zonal Flows in Tokamak Plasmas with Toroidal Rotation

Physical Review Letters, 2006
Zonal flows in tokamak plasmas with toroidal rotation are theoretically investigated. It is found that the low-frequency branch of zonal flows, which is linearly stable in a nonrotating system, becomes linearly unstable in a rotating tokamak, and that the high-frequency branch of zonal flows, the geodesic acoustic mode, can propagate in the poloidal ...
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Uniform Rotational Flux Reversal of Ferrite Toroids

Journal of Applied Physics, 1959
A model is presented for the high speed uniform rotational flux reversal of ferrite toroids. The magnetization is uniform in the sense that the components of magnetization in a cylindrical coordinate system are independent of position. Analysis of the model, to a very good approximation, leads to results identical with those obtained from uniform ...
E. M. Gyorgy, F. B. Hagedorn
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