S
Steven Cowley
Researcher at Imperial College London
Publications - 187
Citations - 12844
Steven Cowley is an academic researcher from Imperial College London. The author has contributed to research in topics: Turbulence & Magnetic field. The author has an hindex of 57, co-authored 187 publications receiving 11796 citations. Previous affiliations of Steven Cowley include University of California, Los Angeles & Los Alamos National Laboratory.
Papers
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Explosive instabilities: from solar flares to edge localized modes in tokamaks
TL;DR: In this article, a nonlinear explosive ballooning model was proposed to explain the explosive loss of plasma confinement that occurs in solar flares, magnetospheric sub-storms, tokamak disruptions and edge localized modes.
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Explosive instabilities and detonation in magnetohydrodynamics
Steven Cowley,Mehmet Artun +1 more
TL;DR: In this paper, a nonlinear MHD model of the line tied Rayleigh-Taylor instability is proposed to deal with large-scale explosive events, where the nonlinearity is destabilizing and broadening causing the linear instability to develop fingers and broaden into the linearly stable region.
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Microstability physics as illuminated in the spherical tokamak
C. M. Roach,D Applegate,J. W. Connor,Steven Cowley,William Dorland,R. J. Hastie,N. Joiner,S. Saarelma,Alexander Schekochihin,R. J. Akers,C. Brickley,A. R. Field,M. Valovic +12 more
TL;DR: In this paper, the authors compared the microstability properties of L-mode and H-mode equilibria, from the MAST experiment at Culham, and showed that the shearing rates of equilibrium E × B flows usually exceed the growth rates of microinstabilities with k⊥ρi 1 (electron temperature gradient, ETG, driven drift waves).
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Physics of spin-polarized plasmas
TL;DR: In this paper, it was shown that the possibility of achieving polarized spin in a fusion plasma cannot be ruled out and that the physics of such plasmas is well worth pursuing both for its intrinsic interest and for its benefit to fusion.
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Magnetofluid dynamics of magnetized cosmic plasma: firehose and gyrothermal instabilities
TL;DR: In this article, it is shown that even without a detailed calculation of the pressure anisotropy or heat fluxes, one finds the macroscale dynamics to be generically unstable to microscale Alfvenically polarized fluctuations.