Naslov
Vortex ring reconnection in laser-matter interactions

Autori
Lugomer, Stjepan

Izvornik
Journal of fluids and structures (0889-9746) 13 (1999), 5; 647-661

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
filaments; organization; solitons; surface

Sažetak
Laser-induced microscale vortex rings have been generated on a vaporizing tantalum surface, and their reconnection was studied in the presence of the shock waves on the nanosecond (ns) time scale. A reach spectrum of the ring structures was obtained, some of which have been observed for the first time. Qualitatively, three classes of interactions were distinguished, on the basis of relative relation between the shock momentum P-s and momentum of the circulating fluid P-c: interactions in the presence of low-momentum shock waves (P-s < P-c); interactions in the presence of the shock waves with momentum comparable to the momentum of a circulating fluid (P-s approximate to P-c), and interactions in the presence of the shock waves of momentum larger than momentum of the circulating fluid (P-s > P-c). A matrix formalism was introduced for description of the reconnection process which assumes the reconnection as the transition between various states, and which automatically gives the time ordering of the processes, as well as the degeneracy of the states.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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