Specialty
Global simulations of a circular tokamak found lower instability growth rates and a higher apparent KBM threshold when equilibrium pressure was treated consistently. Comparisons with ideal MHD also changed with the profile and kinetic treatment.
Scientific publication4 min read
An arXiv preprint reports that an energy-consistent scheme for 10-moment MHD reproduced two instability-growth patterns and followed the expected CFL^3 energy-error scaling, but higher-order versions failed in one reported extremely low-beta blast-wave test.
Scientific publication3 min read
A theoretical calculation predicts discrete coupled ion-acoustic modes with complex spatial structure and zero longitudinal group velocity in a helical magnetic mirror. It also reports instability when a modeled mass-flow quantity exceeds the local ion-sound speed, but the proposed connection to anomalous ion scattering has not been tested.
Scientific publication3 min read
A machine-learning approach reproduced several local linear GENE outputs in a MAST-U-relevant pedestal parameter space, while its authors say broader sampling and further extensions are needed before wider use.
Scientific publication4 min read
A preprint describes first plasma at IPR's compact spherical tokamak and the early limit on plasma-current formation, with vessel-current estimates still under calibration.
Scientific publication4 min read
A laboratory study reports that additively manufactured 316L stainless steel had higher measured sputter yields as ion energy increased, while printed tungsten-rhenium grids operated for a short test in the same ion source.
Scientific publication4 min read
A numerical study reports that spectra built from initialization noise recovered the modeled system’s eigenfrequencies, while weak-drive scans showed enhanced compression near those frequencies and external-drive runs showed heating.
Scientific publication4 min read
Numerical calculations compare cold and finite-temperature ions and find differences in the modeled lunar sheath’s potential, thickness, electric field and particle populations.
Scientific publication5 min read
A modeling preprint proposes judging stellarator confinement by whether an orbit-selected drift surface closes inside the plasma, even when it is misaligned with flux surfaces. The results are analytical and computational, and the framework does not yet cover several important orbit-loss regimes.
Scientific publication4 min read
A laboratory preprint reports electron-drift oscillations at the lower-hybrid frequency in an electron-only reconnection outflow. Linear calculations predict strong instability growth, and a scaled simulation reproduces the broad pattern, but the evidence remains tied to one laboratory configuration.
Scientific publication5 min read