4 papers
Functional perturbation theory under axisymmetry: Simplified formulae and their uses for tokamaks
Wenyin Wei, Liang Liao, Alexander Knieps +3
In strictly axisymmetric configurations of tokamaks, field-line tracing reduces from a three-dimensional ODE system to a two-dimensional one, where Poincaré-Bendixson theorem appli…
Healing of the edge magnetic island in the island divertor configuration on J-TEXT
Zhangrong Hou, Song Zhou, Nengchao Wang +18
The phenomena of island healing and configuration transition induced by high-power electron cyclotron resonance heating (ECRH) have been investigated in the island divertor configu…
On the shifts of stable and unstable manifolds of a hyperbolic cycle under perturbation
Wenyin Wei, Jiankun Hua, Alexander Knieps +1
Stable and unstable manifolds, originating from hyperbolic cycles, fundamentally characterize the behaviour of dynamical systems in chaotic regions. This letter demonstrates that t…
Deformation of invariant tori under perturbation
Wenyin Wei, Jiankun Hua, Alexander Knieps +1
This study extends the functional perturbation theory~(FPT) of dynamical systems, which was initially developed for investigating the shifts of magnetic field line trajectories wit…