engleski

Multisolitons on vortex filaments: the origin of axial tangling

The results of experimental and theoretical study of 2D vortex filament tangling, appearing in laser-matter interactions on nanosecond time scale, are presented. A set of parallel vortex filaments shows various kinds of axial tangling as a consequence of excitation of multisolitons on filaments. It was shown that few basic types of the soliton combinations, either of (+) or (-) wavevector, or both, give rise of tangling of various degrees of topological complexity. Some of the ``basic elements'' of the filament organization which repeat in the tangled structure, were obtained analytically by the Hirota method. The hierarchy in topological complexity of axial tangling of filaments originates from random shock waves (which generate solitons with alternating polarity), while random distribution of the multisoliton velocities causes various cases of their collision and spatial organization.

multisolitons; vortex filaments; laser-matter interactions

nije evidentirano