Results 31 to 40 of about 5,989 (213)

Modelling the electric field applied to a tokamak [PDF]

open access: yes, 2010
The vector potential for the Ohmic heating coil system of a tokamak is obtained in semi-analytical form. Comparison is made to the potential of a simple, finite solenoid.
C.R. de Oliveira   +18 more
core   +1 more source

A Neutron Source Based on Spherical Tokamak

open access: yesEnergies
The paper presents a conceptual study of a neutron source based on a spherical tokamak (ST). The plasma scenario chosen for the ST is non-thermal fusion (hot ion mode), which is extensively used on machines like JET and TFTR deuterium–tritium (DT ...
Francesco P. Orsitto   +5 more
doaj   +1 more source

Gyrokinetic Studies of Microinstabilities in the RFP

open access: yes, 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   +2 more
core   +1 more source

Convectively driven shear and decreased heat flux [PDF]

open access: yes, 2014
We report on direct numerical simulations of two-dimensional, horizontally periodic Rayleigh-B\'enard convection, focusing on its ability to drive large-scale horizontal flow that is vertically sheared.
Flierl, Glenn R.   +3 more
core   +1 more source

Relation between porosity‐based and crystal‐based femtosecond laser‐induced nanogratings in oxide glasses

open access: yesInternational Journal of Applied Glass Science, Volume 17, Issue 1, January 2026.
Abstract Femtosecond laser irradiation in glass, under controlled conditions, can induce two types of nanogratings (NG): porous nanogratings (pNG) and crystal/glass nanogratings (cNG). While most glasses exhibit only one type, binary aluminosilicate glasses have shown both types of NG.
Imane Ktafi   +3 more
wiley   +1 more source

The optimisation of the STEP electron cyclotron current drive concept

open access: yesNuclear Fusion
A fusion reactor based on the spherical tokamak is very likely to be completely non-inductive for the majority of the plasma ramp-up and steady-state phases, due to the limitations imposed on the central coil assemblies by the compact design.
Simon Freethy   +6 more
doaj   +1 more source

Design and construction of magnetic diagnostics on NanChang spherical tokamak

open access: yesAIP Advances, 2022
The NanChang Spherical Tokamak (NCST) is a new compact tokamak (with an aspect ratio of R/a = 1.67) for exploring the merging compression by which the plasma start-up is highly efficient.
T. B. Ouyang   +4 more
doaj   +1 more source

Implications of Innovative Nuclear Technologies on Ghana’s Nuclear Future

open access: yesScience and Technology of Nuclear Installations, Volume 2026, Issue 1, 2026.
Innovations in nuclear technology have the potential to play a transformative role in Ghana’s pursuit of a secure, reliable and low‐carbon energy future. This review examines recent global advances in nuclear reactor technologies, fuel cycle systems, waste management approaches, regulatory practices and digital applications and assesses their relevance
R. G. Abrefah   +4 more
wiley   +1 more source

Stress, strain, neutron transport and radiation effects in a full fusion tokamak device: A virtual MAST-U study [PDF]

open access: yesEPJ Web of Conferences
A finite-element method (FEM) model for the Mega-Ampere Spherical Tokamak - Upgrade (MAST-U) fusion tokamak has been developed to evaluate stress and deformations in the full device structure and to assess the stability of the whole tokamak with respect ...
Reali Luca   +9 more
doaj   +1 more source

Relaxation Phenomena in Spherical Tokamak Plasma [PDF]

open access: yesProgress of Theoretical Physics Supplement, 2000
Dynamics of a relaxation phenomenon observed in Spherical Tokamak experiments, which is called Internal Reconnection Event (IRE), is studied by magnetohydrodynamic computer simulation. Coupling between the torus magnetic field and the external field induced by nonlinear growth of pressure driven instabilities, and resultant formation of tunnel-like ...
Takaya Hayashi   +2 more
openaire   +1 more source

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