engleski

Solitons On Vortex Filaments Generated By Ns Laser Pulse On Metal Surface

Laser-induced vaporization in the nonstationary (oscillatory) regime, on the ns time scale, that generates the nonlinear dynamics of the molten surface layer of tantalum, was studied. Microscale vortex filaments with the cascade of splittings raise up the bushlike structure. The cascade of vortex filament angle-locking splittings was shown to represent the period doubling bifurcation to chaos. Torsion of the filaments generates two-dimensional solitons in the side zones of the bush and three-dimensional solitons in the central zone, Two-dimensional solitons are obtained from a modified Korteweg-de Vries equation, while three-dimensional ones are obtained from nonlinear Schrodinger equation. The surface dynamics associated with metal vaporization appears to be more complex than usually assumed.

curves; motion; plane

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