Physical Acoustics: Principles and Methods, Volume 7

absorption acoustic beam amplitude anisotropy aperture approximately attenuation bandwidth BCS theory behavior Bragg angle Bragg diffraction calculated coefficient components correlation critical point crystal curve decrease density diffracted light effective zone elastic constants elastic wave elastooptical electric field energy gap English Transl equation experimental Fermi surface ferroelectric filter fluxoid free-electron frequency Fresnel diffraction function gap parameter Garland interaction isotropic JETP Kadanoff Leibowitz light beam limit linear liquid longitudinal waves magnetic field material mean free path measurements metals modulator niobium normal obtained optical output phase phonon piezoelectric plane polarization predicted Proc processors propagation direction pulse quartz Raman-Nath ratio Rayleigh waves region relaxation sample scattering Section shown in Fig signal slope solid sound velocity sound wave Soviet Phys spatial superconducting surface waves technique temperature dependence tensor theory tion transducer transition transverse transverse waves ultrasonic ultrasonic attenuation wavelength waves propagating