Nonlinear excitation of second sound in quantum solutions He3-He4 due to light wave absorption
Abstract
Description
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.
5 pages, to be published in Proceedings of the XIX session of the Russian Acoustical Society
5 pages, to be published in Proceedings of the XIX session of the Russian Acoustical Society