Results 21 to 30 of about 345 (184)

Neutral Beam Coupling with Plasma in a Compact Fusion Neutron Source

open access: yesApplied Sciences, 2022
FNS-ST is a fusion neutron source project based on a spherical tokamak (R/a = 0.5 m/0.3 m) with a steady-state neutron generation of ~1018 n/s. Neutral beam injection (NBI) is supposed to maintain steady-state operation, non-inductive current drive and ...
Eugenia Dlougach   +3 more
doaj   +1 more source

Energy confinement scaling in the NCST spherical tokamak [PDF]

open access: yesAIP Advances
Energy confinement time τE and its scaling law in the NanChang Spherical Tokamak (NCST) are investigated based on experimental data from NCST campaigns, with a focus on their dependence on plasma current (IP), toroidal magnetic field (BT), and electron ...
Y. Chen, X. C. Chen, X. F. Wu, S. Q. Liu
doaj   +1 more source

In Situ Sintering Studies of Reactive Sintered Borides (RSB) Neutron Shielding Materials

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 7, July 2026.
ABSTRACT Reactive sintered borides (RSBs) are a family of radiation‐dense materials made by powder metal processing and sintering of elemental precursors. Recent interest in RSBs has focused on their properties as high‐flux low‐activation thermal neutron absorbers for nuclear applications including fusion reactors.
Jessica Marshall   +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

Fluctuating Interfaces in Barotropic Beta‐Plane Turbulence

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Zonal jets manifest themselves as bands with sharp interfaces in the vorticity configuration. We develop an algorithm to track these fluctuating vorticity interfaces and systematically investigate their characteristic spatio‐temporal behaviors.
Sandip Sahoo, Samriddhi Sankar Ray
wiley   +1 more source

Auroral Signatures of Ballooning Instability and Plasmoid Formation Processes in the Near‐Earth Magnetotail

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The nonlinear development of ballooning instability and the subsequently induced plasmoid formation in the near‐Earth magnetotail demonstrated in MHD simulations has been proposed as a potential trigger mechanism for substorm onset over the past decade, and their connections to the in situ satellite and ground all‐sky auroral optical ...
Ping Zhu   +4 more
wiley   +1 more source

Reducing turbulent transport in tokamaks by combining intrinsic rotation and the low momentum diffusivity regime

open access: yesNuclear Fusion
Based on the analysis of a large number of high-fidelity nonlinear gyrokinetic simulations, we propose a novel strategy to improve confinement in spherical tokamak plasmas by combining up-down asymmetric flux surface shaping with the Low Momentum ...
Haomin Sun   +10 more
doaj   +1 more source

Advancements in Tokamak Technology for Fusion Energy: A Bibliometric and Patent Trend Analysis (2014–2024)

open access: yesEnergies
Tokamak technology, as the cornerstone of nuclear fusion energy, holds immense potential in achieving efficient plasma confinement and high energy densities.
Horng Jinh Chang, Shih Wei Wang
doaj   +1 more source

Data readiness pipeline patterns for scientific AI at scale: Insights from climate, fusion, life sciences, and materials

open access: yesAI Magazine, Volume 47, Issue 1, Spring 2026.
Abstract This article examines how data readiness for AI principles apply to large scientific datasets used to train foundation models. We analyze archetypal workflows across four representative domains—climate, nuclear fusion, life sciences, and materials—to identify common preprocessing patterns and domain‐specific constraints.
Wesley Brewer   +6 more
wiley   +1 more source

MHD-FiT: MHD-based dynamic reconstruction of tokamak plasma configuration

open access: yesNuclear Fusion
This paper introduces an innovative method for reconstructing 2D magnetic flux contours and plasma parameters of dynamically moving tokamak plasmas.
T. Ahmadi, Y. Ono, Y. Cai, H. Tanabe
doaj   +1 more source

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