Results 21 to 30 of about 584 (191)
The Astrophysical Journal, 2023 Abstract We analyze the forces that control the dynamic evolution of a flux rope eruption in a three-dimensional radiative magnetohydrodynamic simulation. The confined eruption of the flux rope gives rise to a C8.5 flare. The flux rope rises slowly with an almost constant velocity of a few kilometers per second in the early stage when ...
Can Wang +3 more
openaire +3 more sources
Observation of plasma dynamics in a theta pinch by a novel method
Matter and Radiation at Extremes, 2023 A novel experimental method is proposed for observing plasma dynamics subjected to magnetic fields based on a newly developed cylindrical theta-pinch device.
Zhao Wang +11 more
doaj +1 more source
The Astrophysical Journal, 2023 The angular momentum of gas feeding a black hole (BH) may be misaligned with respect to the BH spin, resulting in a tilted accretion disk. Rotation of the BH drags the surrounding spacetime, manifesting as Lense–Thirring torques that lead to disk ...
Nicholas Kaaz +6 more
doaj +1 more source
Scaling laws of the plasma velocity in visco-resistive magnetohydrodynamic systems
Fundamental Plasma PhysicsWe consider a visco-resistive magnetohydrodynamic modelling of a steady-state incompressible tokamak plasma with a prescribed toroidal current drive, featuring constant resistivity η and viscosity ν.
A. Krupka, M.-C. Firpo
doaj +1 more source
IET Generation, Transmission & Distribution, 2023 Following the design demands of the protective switch used in ±800 kV hybrid UHVDC system, a plasma‐triggered‐based protective gas switch (PTGS) is developed by performing the comparative study of its dynamic performance by considering the arc dynamic ...
Wen Wang +5 more
doaj +1 more source
Development Status and Trends of the ECH Technology for the Magnetic Confinement Fusion
南方能源建设[Introduction] In magnetic confinement fusion research, electron cyclotron heating (ECH) and current drive means are widely implemented for applications including, but not limited to, plasma initiation, heating, non-inductive current drive, and ...
Donghui XIA +3 more
doaj +1 more source
Advanced Science, EarlyView.Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su +13 more
wiley +1 more source
Unveiling the Mechanism for the Rapid Acceleration Phase in a Solar Eruption
The Astrophysical Journal Letters, 2023 Two major mechanisms have been proposed to drive the solar eruptions: the ideal magnetohydrodynamic instability and the resistive magnetic reconnection. Due to the close coupling and synchronicity of the two mechanisms, it is difficult to identify their ...
Ze Zhong +4 more
doaj +1 more source
Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction
Advanced Science, EarlyView.Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen +5 more
wiley +1 more source
Sensors, 2020 This article shows the development of a computer-controlled lab-on-a-chip device with three magnetohydrodynamic (MHD) pumps and a pneumatic valve. The chip was made of a stack of layers of polymethylmethacrylate (PMMA), cut using a laser engraver and ...
Rafael M. Cardoso +4 more
doaj +1 more source