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Reviews of topical problems


Self-action effects for wave beams containing shock fronts

,
Lomonosov Moscow State University, Faculty of Physics, Leninskie Gory 1 build. 2, Moscow, 119991, Russian Federation

The review covers experimental and theoretical studies of the self-action effects observed for intense wave beams with sawtooth time profiles. For sawtooth waves in quadratic nonlinear media, inertial self-focusing and defocusing processes caused by the formation of acoustic streaming and heating due to nonlinear energy dissipation at shock fronts are discussed. Self-refraction of shock-wave pulses is considered, which leads, in particular, to the saturation of the maximal field achieved by focusing. For cubic nonlinear media, where a sawtooth wave contains both compression and rarefaction shocks, the self-focusing process is studied in the presence of its strong competition with nonlinear damping. New mathematical models, their symmetry properties and exact solutions, and the results of numerical simulation are described. A general picture of the state of the art in this field is given.

Fulltext pdf (445 KB)
Fulltext is also available at DOI: 10.1070/PU2004v047n09ABEH001865
PACS: 43.25.+y, 47.40.Nm, 87.54.Hk (all)
DOI: 10.1070/PU2004v047n09ABEH001865
URL: https://ufn.ru/en/articles/2004/9/c/
000226203600003
2004PhyU...47..907R
Citation: Rudenko O V, Sapozhnikov O A "Self-action effects for wave beams containing shock fronts" Phys. Usp. 47 907–922 (2004)
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Оригинал: Руденко О В, Сапожников О А «Явления самовоздействия пучков волн, содержащих ударные фронты» УФН 174 973–989 (2004); DOI: 10.3367/UFNr.0174.200409c.0973

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