Results 171 to 180 of about 474,973 (216)
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Physical Review C, 1986
We examine the influence of angular momentum on the threshold temperature of a nucleus in a toroidal shape of equilibrium. The presence of high angular momentum lowers the threshold temperature at which the toroidal equilibrium begins to appear.
, Zhang, , Wong
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We examine the influence of angular momentum on the threshold temperature of a nucleus in a toroidal shape of equilibrium. The presence of high angular momentum lowers the threshold temperature at which the toroidal equilibrium begins to appear.
, Zhang, , Wong
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Physics of Plasmas, 2016 Effects of neoclassical toroidal viscosity ( NTV) induced by intrinsic error fields and toroidal field ripple on cocurrent toroidal rotation in H-mode tokamak plasmas are investigated.
JaeChun Seol, Yongkyoon In, A Y Aydemir
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Resistive magnetohydrodynamics with toroidal rotation in toroidal plasmas
Physics of Plasmas, 2018Toroidal rotation has always existed in tokamak plasmas, and its Mach number can reach unity during neutral beam injection. Toroidal rotation can affect plasma equilibrium and magnetohydrodynamic instabilities significantly. Based on linearized equations including the toroidal rotation effect, the toroidal model derived by Glasser et al. [Phys.
Jintao Cao, Huishan Cai
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On rotation of collisional plasmas in toroidal systems
Plasma Physics and Controlled Fusion, 1995This 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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Toroidal rotation in tokamak plasmas
Nuclear Fusion, 2009A comprehensive transport equation for the evolution of toroidal rotation in tokamak plasmas is developed self-consistently from the two-fluid momentum equations taking account of the constraints imposed by faster time scale processes. The resultant plasma toroidal rotation equation includes the effects of collision-induced perpendicular viscosities ...
J.D. Callen, A.J. Cole, C.C. Hegna
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Toroidal rotation in the DITE tokamak
Nuclear Fusion, 1985The bulk motion of the plasma in the Divertor Injection Tokamak Experiment (DITE) has been measured using the spectral shifts of impurity emission lines whose intensities are enhanced during H0 beam injection. Rotational speeds in the toroidal direction reach 1.5 ? 107 cm?s?1 during 2.1 MW of co-injection without the divertor fields.
N.C. Hawkes, N.J. Peacock
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Rotation of a classical toroidal plasma
The Physics of Fluids, 1980The 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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Toroidal rotation and momentum transport
Plasma Physics and Controlled Fusion, 1987The authors re-examine the transport of momentum in a collisional plasma rotating at sonic speeds. The slowing down rate due to collisional transport is found to be classical ( tau m-1 approximately nu ii rho i2/a2) and the presence of impurities does not change the order of magnitude of this theoretical result. Thus collisional transport theory cannot
J W Connor +3 more
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Physical Review C, 1978
For very rapidly rotating nuclei, the moment of inertia can be readily increased if the mass is distributed in the form of a torus. Thus, a rotating toroid can be a figure of equilibrium when the angular momentum exceeds a certain limit. The angular momentum thresholds for the onset of toroidal figures of equilibrium are evaluated and found to be ...
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For very rapidly rotating nuclei, the moment of inertia can be readily increased if the mass is distributed in the form of a torus. Thus, a rotating toroid can be a figure of equilibrium when the angular momentum exceeds a certain limit. The angular momentum thresholds for the onset of toroidal figures of equilibrium are evaluated and found to be ...
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Effect of shear in toroidal rotation on toroidicity induced Alfven eigenmodes
Nuclear Fusion, 1997It 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 +11 more
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