Results 41 to 50 of about 116,100 (253)

Turbulent Contributions to Ohm's Law in Axisymmetric Magnetized Plasmas [PDF]

, 2017
The effect of magnetic turbulence in shaping the current density in axisymmetric magnetized plasma is analyzed using a turbulent extension of Ohm's law derived from the self-consistent action-angle transport theory. Besides the well-known hyper-resistive
Coda S., Galeev A. A., Gatto R., I. Chavdarovski, Itoh K., Moffatt H. K., R. Gatto   +6 more
core   +2 more sources

MHD Instabilities in Tokamaks [PDF]

Fusion Science and Technology, 2006
A general introduction to ideal magnetohydrodynamic (MHD) stability of tokamak plasmas is given, using linear perturbations of the ideal MHD equations.
openaire   +4 more sources

Parameter study of ICRH wave propagation in IShTAR [PDF]

, 2016
A crude first assessment of how waves behave is commonly made relying on decoupled dispersion equation roots. In the low density, low temperature region behind the last closed flux surface in a tokamak where the density decays exponentially and where the
Crombé, Kristel, Van Eester, D
core   +3 more sources

Experimental observations of bifurcated power decay lengths in the near Scrape-Off Layer of ST40 High Field Spherical Tokamak

Nuclear Materials and Energy
The scrape-off layer parallel heat flux decay lengths measured at ST40, a high field, low aspect ratio spherical tokamak, have been observed to bifurcate into two groups.
X. Zhang, C. Marsden, M. Moscheni, E.N.J. Maartensson, A. Rengle, M. Robinson, T. O’Gorman, H.F. Lowe, E. Vekshina, S. Janhunen, A. Scarabosio, P.F. Buxton, M. Sertoli, M. Romanelli, S.A.M. McNamara, T.K. Gray, N.A. Lopez   +16 more
doaj   +1 more source

Spectroscopic diagnostics of superthermal electrons with high-number harmonic EC radiation in tokamak reactor plasmas

EPJ Web of Conferences, 2015
A method of spectroscopic diagnostics of the average perpendicular-to-magnetic-field momentum of the superthermal component of the electron velocity distribution (EVD), based on the high-number-harmonic electron cyclotron (EC) radiation, is suggested for
Minashin P.V., Kukushkin A.B.
doaj   +1 more source

Gyrokinetic Studies of Microinstabilities in the RFP

, 2013
An analytic equilibrium, the Toroidal Bessel Function Model, is used in conjunction with the gyrokinetic code GYRO to investigate the nature of microinstabilities in a reversed field pinch (RFP) plasma.
Carmody, Daniel, Pueschel, M. J., Terry, P. W.   +2 more
core   +1 more source

Ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a hot strongly magnetized plasma

, 2011
We present results from three-dimensional ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a uniform hot strongly magnetized plasma, with the aim of providing insight into core fueling of a tokamak with parameters ...
Arseniev, Bengtsson, Castel, Cheifetz, Goodin, H. Jin, Hamilton, Hara, Hara, Hotchkis, Hua, Hwang, Lhersonneau, Li, Luo, Möller, Nilsson, Orlandi, Rodriguez-Guzman, S.-Y. Yu, Sheihk, Sheikh, Sheikh, Sheline, Shizuma, Sieja, Skalski, Smith, Stephens, Sun, Urban, Urban, Velazquez, Verma, Wood, Wu, X.-H. Zhou, Y. Sun, Y.-C. Yang, Y.-H. Zhang, Y.-X. Liu, Yang, Yeoh   +42 more
core   +1 more source

An optimal penalty method for a hyperbolic system modeling the edge plasma transport in a tokamak [PDF]

, 2014
The penalization method is used to take account of obstacles, such as the limiter, in a tokamak. Because of the magnetic confinement of the plasma in a tokamak, the transport occurs essentially in the direction parallel to the magnetic field lines.
Angot, Philippe, Auphan, Thomas, Guès, Olivier   +2 more
core   +3 more sources

Towards a compact spherical tokamak fusion pilot plant

Philosophical Transactions of the Royal Society A, 2019
The question of size of a tokamak fusion reactor is central to current fusion research especially with the large device, ITER, under construction and even larger DEMO reactors under initial engineering design.
A. Costley
semanticscholar   +1 more source

Shear Alfven wave continuous spectrum within magnetic islands

, 2010
The radial structure of the continuous spectrum of shear Alfven waves is calculated in this paper within the separatrix of a magnetic island. Geometrical effects due to the noncircularity of the flux surface's cross section are retained to all orders. On
Biancalani, Alessandro, Chen, Liu, Pegoraro, Francesco, Zonca, Fulvio   +3 more
core   +1 more source