Results 11 to 20 of about 1,964 (170)

Enablement or Suppression of Collisionless Magnetic Reconnection by the Background Plasma Beta and Guide Field. [PDF]

Geophys Res Lett
Abstract How magnetic reconnection is triggered or suppressed is an important outstanding problem. By considering pinching of a current sheet that has formed at non‐equilibrium, we show that the background plasma beta is a major controlling factor in the onset and nature of magnetic reconnection.
Yoon YD, Moore TE, Wendel DE, Laishram M, Yun GS.   +4 more
europepmc   +2 more sources

Acoustic Rayleigh Wave Turbulence in Soft Viscoelastic Matter. [PDF]

Adv Sci (Weinh)
Discrete acoustic Rayleigh wave turbulence (DARWT) is observed on the free surface of viscoelastic materials under monochromatic excitation. Governed by bulk shear rigidity supporting inertial modes against surface tension, the nonlinear Rayleigh waves exhibit distinct power‐law scaling and turbulence features in their Kolmogorov–Zakharov spectra. This
Kharbedia M, López-Menéndez H, García BJ, Velarde MG, Monroy F.   +4 more
europepmc   +2 more sources

Transverse oscillations of two parallel coronal loops [PDF]

, 2008
Context. Collective oscillations of two or more coronal magnetic loops are observed very often. Aims. We study the eigenmodes of oscillations of a system consisting of two parallel magnetic loops. Methods. The linearised MHD equations for a cold plasma
Andries, Andries, Arregui, Aschwanden, Aschwanden, D. Robertson, De Moortel, Dymova, Dymova, Dymova, Edwin, Erdélyi, Erdélyi, Goossens, Luna, M. S. Ruderman, McEwan, Nakariakov, Nakariakov, Ruderman, Ruderman, Ruderman, Ryutov, T. Van Doorsselaere, Terradas, Terradas, Tomczyk, Van Doorsselaere, Van Doorsselaere, Van Doorsselaere, Van Doorsselaere, Verwichte   +31 more
core   +2 more sources

Nonlinear alfv\'enic fast particle transport and losses [PDF]

, 2012
Magnetohydrodynamic instabilities like Toroidal Alfv\'en Eigenmodes or core-localized modes such as Beta Induced Alfv\'en Eigenmodes and Reversed Shear Alfv\'en Eigenmodes driven by fast particles can lead to significant redistribution and losses in ...
Brüdgam, Michael, García-Muñoz, Manuel, Günter, Sibylle, Lauber, Philipp, Schneller, Mirjam   +4 more
core   +2 more sources

On nonlinear scattering of drift wave by toroidal Alfvén eigenmode in tokamak plasmas

Nuclear Fusion, 2023
Using electron drift wave (eDW) as a paradigm model, we have investigated analytically direct wave–wave interactions between a test DW and ambient toroidal Alfvén eigenmodes (TAEs) in toroidal plasmas, and their effects on the stability of the eDW.
Liu Chen, Zhiyong Qiu, Fulvio Zonca
doaj   +1 more source

Double-resonant fast particle-wave interaction [PDF]

, 2012
In future fusion devices fast particles must be well confined in order to transfer their energy to the background plasma. Magnetohydrodynamic instabilities like Toroidal Alfv\'en Eigenmodes or core-localized modes such as Beta Induced Alfv\'en Eigenmodes
Berk H.L., Brüdgam M., Huysmans G.T.A. Goedbloed J.P. Kerner W., Lauber Ph., M. Brüdgam, M. Schneller, Mc Carthy P.J., Ph. Lauber, Pinches S.D., S. D. Pinches, S. Günter   +10 more
core   +3 more sources

Resistive and viscous dynamics of finite-amplitude shear waves at a magnetic X-point [PDF]

, 2005
The dynamics and dissipation of axial shear waves, superposed on a planar magnetic X-point in a resistive viscous incompressible plasma, are analyzed numerically and analytically. The interplay of viscous and resistive effects is demonstrated by deriving
Craig, Ian J.D.
core   +2 more sources

Parametric study of Alfvénic instabilities driven by runaway electrons during the current quench in DIII-D

Nuclear Fusion, 2023
To avoid or mitigate runaway electron (RE) beams in ITER, RE-driven instabilities are actively studied as a complimentary technique to massive material injection.
A. Lvovskiy, C. Paz-Soldan, N.W. Eidietis, A. Dal Molin, G.H. DeGrandchamp, E.M. Hollmann, J.B. Lestz, C. Liu, M. Nocente, D. Shiraki, X.D. Du   +10 more
doaj   +1 more source

Tidal resonance locks in inspiraling white dwarf binaries [PDF]

, 2012
We calculate the tidal response of helium and carbon/oxygen (C/O) white dwarf (WD) binaries inspiraling due to gravitational wave emission. We show that resonance locks, previously considered in binaries with an early-type star, occur universally in WD ...
Arras, Phil, Burkart, Joshua, Quataert, Eliot, Weinberg, Nevin N.   +3 more
core   +2 more sources

Study of fast-ion-driven toroidal Alfvén eigenmodes impacting on the global confinement in TCV L-mode plasmas

Frontiers in Physics, 2023
Following recent observations of unstable Toroidal Alfvén Eigenmodes (TAEs) in a counter-current Neutral Beam Injection (NBI) scenario developed in TCV, an in-depth analysis of the impact of such modes on the global confinement and performance is carried
S. Mazzi, S. Mazzi, M. Vallar, U. Kumar, O. Krutkin, J. Poley-Sanjuan, L. Simons, J. Ball, S. Brunner, S. Coda, J. Garcia, A. Iantchenko, Ye. O. Kazakov, W. H. Lin, J. Ongena, B. Rofman, L. Villard, the TCV team   +17 more
doaj   +1 more source