Nonlinear excitation of second sound in quantum solutions He3-He4 due to light wave absorption

Details Nonlinear excitation of second sound in quantum solutions He3-He4 due to light wave absorption Nonlinear excitation of second sound in quantum solutions He3-He4 due to light wave absorption

2007-03-05

arxiv.org/abs/cond-mat/0703118v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, to be published in Proceedings of the XIX session of the Russian Acoustical Society

Scientific paper

Nonlinear excitation of second sound in superfluid solutions He3-He4 by light waves due to their absorption is discussed. Nonlinear wave equations that model the interaction of second-sound waves with light waves are derived, the expression for the nonlinear interaction length is obtained and an order-of-magnitude numerical estimate of the distance at which a second-sound wave could be amplified from a fluctuation level up to observable values is performed.

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