Results 51 to 60 of about 85,365 (260)

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

Understanding the core density profile in TCV H-mode plasmas

, 2012
Results from a database analysis of H-mode electron density profiles on the Tokamak \`a Configuration Variable (TCV) in stationary conditions show that the logarithmic electron density gradient increases with collisionality.
A Pitzschke, Alberti S, Angioni C, Angioni C, Angioni C, Angioni C, Bortolon A, Bottino A, Casati A, Coda S, D Wágner, E Fable, Ernst D R Basse N Dorland W Fiore C L Lin L Long A Porkolab M Zeller K Zhurovich K, Fable E, Fable E, Fable E, H Weisen, Hofmann F, Lapillonne X, Martin Y, Maslov M, Maslov M Weisen H Zabolotsky A Porte L Angioni C Beurskens M the TCV team, Merz F, O Sauter, Porte L, Romanelli M, Ryter F, Stober J, Weisen H, Zabolotsky A   +29 more
core   +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

Symmetry Group and Group Representations Associated to the Thermodynamic Covariance Principle (TCP)

, 2016
We describe the Lie group and the group representations associated to the nonlinear Thermodynamic Coordinate Transformations (TCT). The TCT guarantee the validity of the Thermodynamic Covariance Principle (TCP) : {\it The nonlinear closure equations, i.e.
Evslin, Jarah, Sonnino, Alberto, Sonnino, Giorgio, Steinbrecher, György, Tirapegui, Enrique   +4 more
core   +1 more source

Demonstration Tokamak Power Plant [PDF]

Nuclear Technology - Fusion, 1983
A design study of a tokamak-based fusion demonstration reactor was carried out. The study focused on four critical design features: 1) current drive for steady-state operation, 2) impurity control and exhaust, 3) breeding blanket, and 4) reactor configuration and maintenance.
Abdou, M., Baker, C., Brooks, J., Ehst, D., Mattas, R., Smith, D. L., DeFreece, D., Morgan, G. D., Trachsel, C.   +8 more
openaire   +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

HEAT simulation and IR data comparison for ST40 plasma-facing components

Nuclear Materials and Energy
The Heat Flux Engineering Analysis Toolkit (HEAT) (Looby et al., 2022) was used to simulate the heat flux, qtarget, on ST40 molybdenum divertors. Results were compared with experimental infrared (IR) data.
E.J.C. Tinacba, T.K. Gray, M. Moscheni, C. Marsden, E. Vekshina, O. Asunta, P. Bunting, S. McNamara, A. Rengle, T. Looby, E.A. Unterberg   +10 more
doaj   +1 more source

Environmental dose rate assessment of ITER using the Monte Carlo method [PDF]

Nuclear Technology and Radiation Protection, 2014
Exposure to radiation is one of the main sources of risk to staff employed in reactor facilities. The staff of a tokamak is exposed to a wide range of neutrons and photons around the tokamak hall.
Karimian Alireza, Beheshti Amir, Abdi Mohammadreza, Jabbari Iraj   +3 more
doaj   +1 more source

Partition Functions and Mass Action Constants of Plasmas of Light Elements at Higher Temperatures

Contributions to Plasma Physics, Volume 65, Issue 7, August 2025.
ABSTRACT We first analyze the relations between the work of Planck and Klimontovich and show that Klimontovich's kinetic theory of non‐ideal plasmas confirms Planck's partition function for the hydrogen plasma. We discuss and check the Planck‐Brillouin‐Larkin (PBL) expressions for Hydrogen with PIMC calculations and derive new partition functions and ...
Werner Ebeling, Gerd Röpke
wiley   +1 more source

Overview of recent results from the ST40 compact high-field spherical tokamak

Nuclear Fusion
ST40 is a compact, high-field ( $B_{\mathrm{T0}}\unicode{x2A7D} 2.1\,\,\,\textrm{T}$ ) spherical tokamak (ST) with a mission to expand the physics and technology basis for the ST route to commercial fusion.
S.A.M. McNamara, A. Alieva, M.S. Anastopoulos Tzanis, O. Asunta, J. Bland, H. Bohlin, P.F. Buxton, C. Colgan, A. Dnestrovskii, E. du Toit, M. Fontana, M. Gemmell, M.P. Gryaznevich, J. Hakosalo, M.R. Hardman, D. Harryman, D. Hoffman, M. Iliasova, S. Janhunen, F. Janky, J.B. Lister, H.F. Lowe, E. Maartensson, C. Marsden, S.Y. Medvedev, S.R. Mirfayzi, M. Moscheni, G. Naylor, V. Nemytov, J. Njau, T. O’Gorman, D. Osin, T. Pyragius, A. Rengle, M. Romanelli, C. Romero, M. Sertoli, V. Shevchenko, J. Sinha, A. Sladkomedova, S. Sridhar, J. Stirling, Y. Takase, P.R. Thomas, J. Varje, E. Vekshina, B. Vincent, H.V. Willett, J. Wood, E. Wooldridge, D. Zakhar, X. Zhang, D. Battaglia, N. Bertelli, P.J. Bonofiglo, L.F. Delgado-Aparicio, V.N. Duarte, N.N. Gorelenkov, M. de Haas, S.M. Kaye, R. Maingi, D. Mueller, M. Ono, M. Podesta, Y. Ren, S. Trieu, E. Delabie, T.K. Gray, B. Lomanowski, E.A. Unterberg, O. Marchuk, the ST40 Team   +71 more
doaj   +1 more source