Stable and unstable invariant manifolds in a partially chaotic magnetic configuration generated by nonlinear reconnection
Academic Article
Publication Date:
2008
abstract:
A numerical contour dynamics code has been employed to calculate the stable and unstable
manifolds related to two interacting magnetic island chains. The magnetic configuration is generated
by a nonlinear reconnection process described in D. Borgogno et al. Phys. Plasmas. 12, 032309
2005. The appearance of the first homoclinic and heteroclinic intersections of the dominant
manifolds are shown and one of the associated uniformly hyperbolic orbits is given. The stickiness
of the field lines around the island and the eventual development of global stochasticity are
discussed. The basic geometry of the magnetic configuration is periodic so that the structure of the
manifolds may be compared with the one obtained with Poincaré plots.
manifolds related to two interacting magnetic island chains. The magnetic configuration is generated
by a nonlinear reconnection process described in D. Borgogno et al. Phys. Plasmas. 12, 032309
2005. The appearance of the first homoclinic and heteroclinic intersections of the dominant
manifolds are shown and one of the associated uniformly hyperbolic orbits is given. The stickiness
of the field lines around the island and the eventual development of global stochasticity are
discussed. The basic geometry of the magnetic configuration is periodic so that the structure of the
manifolds may be compared with the one obtained with Poincaré plots.
Iris type:
01.01 Articolo in rivista
Keywords:
HYPERBOLIC TRAJECTORIES; CONTOUR DYNAMICS; VELOCITY; FIELDS; FLOWS
List of contributors:
Grasso, Daniela
Published in: