Results 251 to 260 of about 1,947,311 (293)

Influence of resonance magnetic perturbation on the asymmetric magnetic perturbation induced double tearing modes

Radiation Effects and Defects in Solids, 2021
In this paper, we have studied the influence of resonance magnetic perturbation (RMP) on the double tearing modes induced by asymmetric magnetic perturbation in a 2D geometry based on the MHD model...
Le Wang, Qing Zhao, Wenyang Sun, Lei Wang   +3 more
openaire   +1 more source

Effects of Resonant Magnetic Perturbation on Particle Transport in LHD [PDF]

Plasma and Fusion Research, 2013
In this study, the effects of resonant magnetic perturbation (RMP) on particle transport are investigated in Large Helical device (LHD). The magnetic configuration is selected to be the outwardly shifted configuration, for which the magnetic axis ...
Yasuhiro Suzuki, Katsumi Ida, Yoshiro Narushima   +2 more
exaly   +2 more sources

Propagation Dynamics Associated with Resonant Magnetic Perturbation Fields in High-Confinement Mode Plasmas inside the KSTAR Tokamak [PDF]

Physical Review Letters, 2017
The propagation dynamics of resonant magnetic perturbation fields in KSTAR H-mode plasmas with injection of small edge perturbations produced by a supersonic molecular beam injection is reported for the first time.
George R Tynan, YoungMu Jeon, Todd E Evans   +2 more
exaly   +2 more sources

Magnetic Island Formation in Coexisting System of Resonant Magnetic Perturbation and Perturbed Bootstrap Current

Journal of the Physical Society of Japan, 2019
A reduced two-fluid model describing the coexisting system of the resonant magnetic perturbations (RMPs) and plasma flows is extended to include an effect of the perturbed bootstrap current.
Seiya Nishimura, Ryusuke Numata
openaire   +1 more source

Screening of resonant magnetic perturbations by flows in tokamaks

Nuclear Fusion, 2012
Abstract The non-linear reduced four-field RMHD model in cylindrical geometry was extended to include plasma rotation, neoclassical poloidal viscosity and two fluid diamagnetic effects. Interaction of the static resonant magnetic perturbations (RMPs) with the rotating plasmas in tokamaks was studied.
M. Becoulet, F. Orain, P. Maget, N. Mellet, X. Garbet, E. Nardon, G.T.A. Huysmans, T. Casper, A. Loarte, P. Cahyna, A. Smolyakov, F.L. Waelbroeck, M. Schaffer, T. Evans, Y. Liang, O. Schmitz, M. Beurskens, V. Rozhansky, E. Kaveeva   +18 more
openaire   +1 more source

Automatic detection of perturbed magnetic resonance signal

SPIE Proceedings, 2017
Magnetic resonance imaging (MRI) is widely used in medicine nowadays, yet a significant disadvantage is the amount of artifacts that affect the image during the acquisition process. This paper presents a strategy for automatic damage detection when the image is altered by movement or there is a loss of information due to magnetic susceptibility.
Jennifer Salguero, Nelson Velasco, Eduardo Romero C.   +2 more
openaire   +1 more source

The interaction of resonant magnetic perturbations with rotating plasmas

Physics of Fluids B: Plasma Physics, 1991
The penetration of a helical magnetic perturbation into a rotating tokamak plasma is investigated. In the linear regime, it is found that unless the frequency of the imposed perturbation matches closely to one of the natural mode frequencies, reconnection at the rational surface is suppressed by a large factor.
R. Fitzpatrick, T. C. Hender
openaire   +1 more source

Shielding of resonant magnetic perturbations by rotation

Physics of Plasmas, 1996
Magnetic perturbations that drive islands are shielded from a rotating plasma by either a torque limit or an equilibrium limit. The physics of the shielding is given in a simple slab model along with the mechanism by which the shielding currents are maintained.
openaire   +2 more sources

Extended MHD simulation of resonant magnetic perturbations

Nuclear Fusion, 2009
Resonant magnetic perturbations (RMPs) have been found effective in suppressing edge localized modes (ELMs) in the DIII-D experiment (Evans et al 2006 Phys. Plasmas 13 056121, Moyer et al 2005 Phys. Plasmas 12 056119). Simulations with the M3D initial value code indicate that plasma rotation, due to an MHD toroidal
H.R. Strauss, L. Sugiyama, G.Y. Park, C.S. Chang, S. Ku, I. Joseph   +5 more
openaire   +1 more source