Results 21 to 30 of about 9,824 (218)

Role of Radio Frequency and Microwaves in Magnetic Fusion Plasma Research [PDF]

open access: yesJournal of the Korean Institute of Electromagnetic Engineering and Science, 2017
The role of electromagnetic (EM) waves in magnetic fusion plasma—ranging from radio frequency (RF) to microwaves—has been extremely important, and understanding of EM wave propagation and related technology in this field has significantly advanced ...
Hyeon K. Park
doaj   +1 more source

DRIVING SOLAR SPICULES AND JETS WITH MAGNETOHYDRODYNAMIC TURBULENCE: TESTING A PERSISTENT IDEA [PDF]

open access: yesThe Astrophysical Journal, 2015
The solar chromosphere contains thin, highly dynamic strands of plasma known as spicules. Recently, it has been suggested that the smallest and fastest (Type II) spicules are identical to intermittent jets observed by the Interface Region Imaging Spectrograph.
Steven R. Cranmer, Lauren N. Woolsey
openaire   +2 more sources

Comments on "Plasma current drive by injection of photons with helicity" [Comm. Plasma Phys. Controlled Fusion 12, 165 (1989)] [PDF]

open access: yes, 1989
Ohkawa has proposed a tokamak current-drive scheme [Comm. Plasma Phys. Controlled Fusion 12, 165 (1989)], which relies on the injection of circularly polarized magnetohydrodynamic waves.
Bellan, P. M., Schalit, M. A.
core   +1 more source

Can useful toroidal current be driven by classical viscoresistive Alfvén waves? [PDF]

open access: yes, 1991
Simple, yet exact, analytic solutions for the shear and compressional Alfvén wave are obtained for helical magnetohydrodynamic (MHD) waves in cylindrical geometry with both resistivity and viscosity included.
Bellan, P. M., Schalit, M. A.
core   +1 more source

Adaptive mesh refinement with spectral accuracy for magnetohydrodynamics in two space dimensions [PDF]

open access: yes, 2007
We examine the effect of accuracy of high-order spectral element methods, with or without adaptive mesh refinement (AMR), in the context of a classical configuration of magnetic reconnection in two space dimensions, the so-called Orszag-Tang vortex made ...
A Pouquet   +13 more
core   +2 more sources

Numerical Simulations of the Geospace Response to the Arrival of an Idealized Perfect Interplanetary Coronal Mass Ejection

open access: yesSpace Weather, 2021
Previously, Tsurutani and Lakhina (2014, https://doi.org/10.1002/2013GL058825) created estimates for a “perfect” interplanetary coronal mass ejection and performed simple calculations for the response of geospace, including dB/dt.
Daniel T. Welling   +5 more
doaj   +1 more source

Tidally driven dynamos in a rotating sphere [PDF]

open access: yes, 2014
Large-scale planetary or stellar magnetic fields generated by a dynamo effect are mostly attributed to flows forced by buoyancy forces in electrically conducting fluid layers.
Cébron, David, Hollerbach, Rainer
core   +3 more sources

Toward 3D MHD modeling of neoclassical tearing mode suppression by ECCD

open access: yesEPJ Web of Conferences, 2012
We propose a framework to extend the magnetohydrodynamic (MHD) equations to include electron cyclotron current drive (ECCD) and discuss previous models proposed by Giruzzi et al. [2] and by Hegna and Callen [3].
Westerhof E., Pratt J.
doaj   +1 more source

High-order coupling of shear and sonic continua in JET plasmas

open access: yesNuclear Fusion, 2023
A recent model coupling the shear-Alfvén and acoustic continua, which depends strongly on the equilibrium shaping and on elongation in particular, is employed to explain the properties of Alfvénic activity observed on JET plasmas below but close to the ...
Paulo Rodrigues   +10 more
doaj   +1 more source

Reconnection Studies Under Different Types of Turbulence Driving [PDF]

open access: yes, 2012
We study a model of fast magnetic reconnection in the presence of weak turbulence proposed by Lazarian and Vishniac (1999) using three-dimensional direct numerical simulations. The model has been already successfully tested in Kowal et al.
Kowal, Grzegorz   +3 more
core   +2 more sources

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