P. A. Voinovich, “On the gain sensitivity of reversed acoustic signal at parametric resonance conditions to small variations in wavelength”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2010, Volume 36, Issue 9,Pages <nobr>60

On the gain sensitivity of reversed acoustic signal at parametric resonance conditions to small variations in wavelength

P. A. Voinovich

St. Petersburg Branch of Joint Supercomputer Center of Russian Academy of Sciences, St. Petersburg, Russia

Abstract: The ultrasound wave propagation in a sample of finite length under parametric resonance conditions caused by the modulation of sound velocity in a magnetostrictive material by a variable magnetic field, is simulated numerically to fill in the gaps in the earlier analytical solutions for discrete values of sample length to acoustic wavelength ratio, demonstrating a high sensitivity of the reversed signal gain to small variations in the above ratio.

Received: 24.11.2009