A5085324184- Magnetic confinement fusion research
- Supercapacitor Materials and Fabrication
- Plasma Diagnostics and Applications
- Advancements in Battery Materials
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Particle accelerators and beam dynamics
- Advanced Battery Materials and Technologies
- Fluid Dynamics and Turbulent Flows
- Landslides and related hazards
- Evacuation and Crowd Dynamics
- Fusion materials and technologies
- Vibration and Dynamic Analysis
- Laser-induced spectroscopy and plasma
- Plasma Applications and Diagnostics
- Geomagnetism and Paleomagnetism Studies
- Dust and Plasma Wave Phenomena
- Advanced Data Storage Technologies
- MXene and MAX Phase Materials
- ZnO doping and properties
- Electrohydrodynamics and Fluid Dynamics
- Cryospheric studies and observations
- Magnetic properties of thin films
- Characterization and Applications of Magnetic Nanoparticles
- Magnetic Bearings and Levitation Dynamics
Nanyang Normal University
2020-2021
Princeton University
2020-2021
Princeton Plasma Physics Laboratory
2020-2021
Massachusetts Institute of Technology
2021
Fusion Academy
2021
Fusion (United States)
2021
Anyang Normal University
2020
This paper explores structure formation in two-dimensional magnetohydrodynamic (MHD) turbulence as a modulational instability (MI) of turbulent fluctuations. We focus on the early stages and consider simple backgrounds that allow for tractable model MI while retaining full chain harmonics. approach allows us to systematically examine validity popular closures such quasilinear approximation other low-order truncations. find that, although can provide quantitatively accurate approximations...
The RF stabilization of tearing modes with current condensation has the potential to increase efficiency and loosen power localization requirements. Such benefits stem from cooperative feedback between deposition resulting island temperature perturbation governed by diffusion. A self consistent treatment damping an rf ray as it traverses shows that low scenarios can require unfavorably high powers overcome initial leakage effectively capitalize on nonlinear effect. In this work is...
This paper discusses the use of radio frequency (RF) current drive to stabilize large islands, focusing on nonlinear effects that appear when relatively high powers are used islands. We interested in developing a capability islands via RF driven currents avoid need for mitigation extent possible. As tokamaks designed and built with increasing levels stored energy plasma, disruptions become increasingly dangerous. It has been reported 95% Joint European Torus tokamak ITER-like wall preceded...
The stabilization of tearing modes with rf waves is subject to a nonlinear effect, termed current condensation, that has the potential greatly enhance and localize driven within magnetic islands. Here we extend previous investigations this effect two fluid model captures balance diffusive thermal equilibration processes island. We show effective power resulting strength condensation can be enhanced by avoiding collisional heat loss ions. relative impact collisions on overall island depends...
The stabilization of tearing modes with rf driven current benefits from the cooperative feedback loop between power deposition and electron temperature within island. This effect, termed condensation, can greatly enhance localize magnetic islands. It has previously been shown that condensation effect opens possibility passive broad profiles, as would be typical LHCD for steady state operation. Here, we show this self-healing dramatically amplified by operation in a hot ion mode, due to...
Because of the large mass differences between electrons and ions, heat diffusion in electron-ion plasmas exhibits more complex behavior than simple found typical gas mixtures. In particular, is diffused two distinct, but coupled, channels. Conventional single fluid models neglect resulting complexity, can often inaccurately interpret results pulse experiments. However, by recognizing sensitivity electron temperature evolution to ion diffusivity, not only previous experiments be interpreted...