Results 181 to 190 of about 474,973 (216)

Vortices for a Rotating Toroidal Bose–Einstein Condensate

Archive for Rational Mechanics and Analysis, 2007
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Alama, Stan, Bronsard, Lia, Montero, J. Alberto   +2 more
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Neoclassical poloidal and toroidal rotation in tokamaks

Physics of Fluids B, 1991
Explicit expressions for the neoclassical poloidal and toroidal rotation speeds of primary ion and impurity species are derived via the Hirshman and Sigmar moment approach. The rotation speeds of the primary ion can be significantly different from those of impurities in various interesting cases.
Patrick H. Diamond, R J Groebner, Y B Kim   +2 more
exaly   +2 more sources

Toroidal rotation of hydrogen in the RTP tokamak

Plasma Physics and Controlled Fusion, 2002
With a high resolution visible light spectrometer the Hα emission at the RTP tokamak has been studied. Monitoring the Hα line (6562.8 A) with a toroidal line of sight into the plasma shows spectra with intricate Hα line structures. These line profiles can be explained by the occurrence of three different velocity groups of excited hydrogen with ...
Gravestijn, R.M., Meijer, F.G.
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On rotation of multi-species plasmas in toroidal systems

Plasma Physics and Controlled Fusion, 1996
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 ...
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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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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
openaire   +1 more source

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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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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Toroidal plasma rotation in a rippled tokamak

Physics Letters A, 1995
Abstract The problem of toroidal plasma rotation in a rippled tokamak with neutral-beam injection in the banana regime is studied. The effect of friction between circulating and locally-trapped ions is considered. It is shown that allowing for this effect one can explain experimental results of the reduction of toroidal plasma rotation due to ...
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Compact Toroids with Rotating Halo-the Spintor

Japanese Journal of Applied Physics, 1983
Stability analysis to tilting mode is performed for a type of compact toroids (CT) spinning about its axis of symmetry and a new method of giving CT a spin about the axis is proposed.
openaire   +1 more source