104 citations · 1.6k across the 103 of their papers we have counts for
6 papers · 2 filters
Stochastic simulation of collisions using high-order weak convergence algorithms
Wentao Wu, Jian Liu, Hong Qin
Electron collisions, described by stochastic differential equations (SDEs), were simulated using a second-order weak convergence algorithm. Using stochastic analysis, we constructe…
Magnetohydrodynamical equilibria with current singularities and continuous rotational transform
Yao Zhou, Yi-Min Huang, A. H. Reiman +2
We revisit the Hahm-Kulsrud-Taylor (HKT) problem, a classic prototype problem for studying resonant magnetic perturbations and 3D magnetohydrodynamical equilibria. We employ the bo…
Explicit High-Order Gauge-Independent Symplectic Algorithms for Relativistic Charged Particle Dynamics
Jianyuan Xiao, Hong Qin
Symplectic schemes are powerful methods for numerically integrating Hamiltonian systems, and their long-term accuracy and fidelity have been proved both theoretically and numerical…
The role of magnetic moment in the collisionless pitch-angle scattering of runaway electrons
Chang Liu, Hong Qin, Eero Hirvijoki +2
Recently, the validity of the guiding-center approach to model relativistic runaway electrons in tokamaks has been challenged by full-orbit simulations that demonstrate the breakdo…
Simulations of relativistic-quantum plasmas using real-time lattice scalar QED
Yuan Shi, Jianyuan Xiao, Hong Qin +1
Real-time lattice quantum electrodynamics (QED) provides a unique tool for simulating plasmas in the strong-field regime, where collective plasma scales are not well-separated from…
Degenerate Variational Integrators for Magnetic Field Line Flow and Guiding Center Trajectories
C. Leland Ellison, John M. Finn, Joshua W. Burby +3
Symplectic integrators offer many advantages for the numerical solution of Hamiltonian differential equations, including bounded energy error and the preservation of invariant sets…