Results 21 to 30 of about 1,964 (170)
On the vertical and horizontal transverse oscillations of curved coronal loops [PDF]
, 2009 Kink oscillations of curved coronal loops with the density varying along the loop are studied in the thin tube approximation. The equilibrium magnetic field is assumed to be potential, and the field potential and flux function are used as curvilinear ...
Aschwanden +8 more
core +1 more source
On the validity of nonlinear Alfvén resonance in space plasmas [PDF]
, 2008 Aims. In the approximation of linear dissipative magnetohydrodynamics (MHD), it can be shown that driven MHD waves in magnetic plasmas with high Reynolds number exhibit a near resonant behaviour if the frequency of the wave becomes equal to the local ...
Arregui +35 more
core +3 more sources
Toroidal Alfvén eigenmodes observed in low power JET deuterium–tritium plasmas
Nuclear Fusion, 2023 The Joint European Torus recently carried out an experimental campaign using a plasma consisting of both deuterium (D) and tritium (T). We observed a high-frequency mode using a reflectometer and an interferometer in a D-T plasma heated with low power ...
H.J.C. Oliver +15 more
doaj +1 more source
Nonlinear saturation of reverse shear Alfvén eigenmodes induced by kinetic electrons
Nuclear Fusion, 2022 A strong nonlinear saturation mechanism of the reverse shear Alfvén eigenmode (RSAE) induced by thermal electrons is observed in gyrokinetic ${\delta}f$ particle-in-cell simulation.
Lei Ye, Yang Chen, Guoyong Fu
doaj +1 more source
, 2016 FOXTAIL is a new hybrid magnetohydrodynamic-kinetic code used to describe interactions between energetic particles and Alfv\'en eigenmodes in tokamaks with realistic geometries.
Hellsten, Torbjörn +2 more
core +1 more source
Multi-mode Alfv\'enic Fast Particle Transport and Losses: Numerical vs. Experimental Observation
, 2013 In many discharges at ASDEX Upgrade fast particle losses can be observed due to Alfv\'enic gap modes, Reversed Shear Alfv\'en Eigenmodes or core-localized Beta Alfv\'en Eigenmodes.
Bilato, Roberto +6 more
core +1 more source
Comparison of methods for numerical calculation of continuum damping [PDF]
, 2014 Continuum resonance damping is an important factor in determining the stability of certain global modes in fusion plasmas. A number of analytic and numerical approaches have been developed to compute this damping, particularly in the case of the ...
Bowden, George +4 more
core +2 more sources
Rapid dissipation in a current sheet driven by footpoints motions [PDF]
, 2006 Context.Wave energy dissipation by viscous and resistive damping in magnetic coronal plasmas is addressed. A two and one half dimensional, line-tied magnetic channel is considered whose footpoints are disturbed by buffeting motions of the photosphere ...
Craig, Ian J.D., Fruit, G.
core +4 more sources
Nuclear Fusion, 2023 During the first operational phase (OP1) of the Wendelstein 7-X (W7-X) stellarator, poloidal magnetic field fluctuations, $\dot{B}_{\theta}$ , were measured in several different plasma scenarios with a system of Mirnov coils.
S. Vaz Mendes +12 more
doaj +1 more source
Fast magnetohydrodynamic waves in a solar coronal arcade [PDF]
, 2017 Aims. To investigate detailed properties of fast MHD modes of a three-dimensional waveguide for a cylindrical magnetic arcade. Methods. To derive governing equations and dispersion relations for different density profiles and to numerically solve them
Jain, R., Thackray, H.
core +2 more sources