Results 51 to 60 of about 141,584 (298)

Transitions to improved confinement regimes induced by changes in heating in zero-dimensional models for tokamak plasmas [PDF]

, 2014
It is shown that rapid substantial changes in heating rate can induce transitions to improved energy confinement regimes in zero-dimensional models for tokamak plasma phenomenology. We examine for the first time the effect of step changes in heating rate
Freidberg J. P., H. Zhu, Hilborn R. C., K. Itoh, R. O. Dendy, S. C. Chapman   +5 more
core   +2 more sources

Real-time capable first principle based modelling of tokamak turbulent transport [PDF]

, 2015
A real-time capable core turbulence tokamak transport model is developed. This model is constructed from the regularized nonlinear regression of quasilinear gyrokinetic transport code output.
J. Citrin, S. Breton, F. Felici, F. Imbeaux, T. Aniel, J. Artaud, B. Baiocchi, C. Bourdelle, Y. Camenen, J. Garcia   +9 more
semanticscholar   +1 more source

Effective Resistivity for Magnetohydrodynamic Simulation of Collisionless Magnetic Reconnection

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract The electron inertia and the off‐diagonal electron pressure terms are well‐known for the frozen‐in condition breakdown in collisionless magnetic reconnection, which are naturally kinetic and difficult to employ in magnetohydrodynamic (MHD) simulations.
H. W. Zhang, Z. W. Ma, T. Chen
wiley   +1 more source

Tungsten melting and erosion under plasma heat load in tokamak discharges with disruptions

Nuclear Materials and Energy, 2017
Full tungsten poloidal and mushroom limiters were tested in series of experiments with disruptions in the T-10 tokamak. Significant melting, formation of small craters and erosion of the tungsten limiter have been observed after ∼400 discharges with ...
V.P. Budaev, Yu.V. Martynenko, S.A. Grashin, R.N. Giniyatulin, I.I. Arkhipov, A.V. Karpov, P.V. Savrukhin, E.A. Shestakov, R.Yu. Solomatin, L.B. Begrambekov, N.E. Belova, S.D. Fedorovich, L.N. Khimchenko, V.M. Safronov   +13 more
doaj   +1 more source

Unveiling the structure and dynamics of peeling mode in quiescent high-confinement tokamak plasmas

Communications Physics, 2021
Unveiling the properties of edge harmonic oscillation is one of the major pursuits to understand complex systems in plasma physics. The authors present measurements at the JT-60U tokamak that show direct observations of peeling modes in quiescent high ...
Kensaku Kamiya, Kimitaka Itoh, Nobuyuki Aiba, Naoyuki Oyama, Mitsuru Honda, Akihiko Isayama   +5 more
doaj   +1 more source

A h‐Adaptivity Strategy for Hybridizable Discontinuous Galerkin (HDG) Simulations of Fluid Transport Models in Tokamak Plasma

International Journal for Numerical Methods in Engineering, Volume 126, Issue 17, 15 September 2025.
ABSTRACT The highly anisotropic, multi‐scale nature of fusion plasma simulations in tokamaks, combined with the complexity in the geometries of plasma‐facing components and magnetic equilibrium, challenges numerical schemes. They therefore require the development of advanced numerical techniques to enhance computational efficiency and enable codes to ...
Marcello Capasso, Ivan Kudashev, Frédéric Schwander, Éric Serre   +3 more
wiley   +1 more source

2D continuous spectrum of shear Alfven waves in the presence of a magnetic island

, 2010
The radial structure of the continuous spectrum of shear Alfven modes is calculated in the presence of a magnetic island in tokamak plasmas. Modes with the same helicity of the magnetic island are considered in a slab model approximation.
Alessandro Biancalani, Annibaldi S V, Biancalani A, Biancalani A Chen L Pegoraro F Zonca F, Botrugno A, Buratti P, Chen L, Chen L, Chen L, Francesco Pegoraro, Fulvio Zonca, Liu Chen, Mikhailovskii A B, Mikhailovskii A B, Pinches S D, Tuccillo A A, Zonca F, Zonca F, Zonca F, Zonca F   +19 more
core   +1 more source

Measurements of Auroral Plasma Properties Using Low‐Cost, Mobile, Ground‐Based Detectors

Earth and Space Science, Volume 12, Issue 9, September 2025.
Abstract An expedition to Fairbanks, AK, was undertaken to study the aurora during the peak of solar cycle 25. Low‐cost diagnostics were developed to enable ground‐based measurements of ionospheric plasma parameters and auroral phenomena, namely a compact spectrometer and a high‐resolution all‐sky camera with 2‐axis magnetometer. Observations were made
S. Mackie, J. Rivera, T. Evans, J. L. Ball, S. Dannhoff, J. Heinzel, J. Van de Lindt, S. Moroch   +7 more
wiley   +1 more source

THE SPECTROSCOPY OF TOKAMAKS

Le Journal de Physique Colloques, 1980
The importance of line spectra of highly ionized heavy atoms in Tokamak plasma is recalled. A short review is given of methods, mostly theoretical, used for identifying lines : ab initio computation of wavelengths and intensities. The case of unresolved transition arrays is described.
openaire   +2 more sources

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