Physical Acoustics V6

Physical Acoustics V6

Principles and Methods

1st Edition - January 1, 1970

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  • Editor: Warren P. Mason
  • eBook ISBN: 9780323151672

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Physical Acoustics: Principles and Methods, Volume VI provides five chapters covering the whole of physical acoustics. The first chapter extends the methods for studying high frequency sound waves in the hypersonic range by the technique of Brillouin scattering. The next chapter discusses the acoustic properties of materials of the perovskite structure. These materials have ""soft"" modes, which are transverse optic modes of the phonon spectrum that have unusually low and strongly temperature dependent frequencies. This chapter expounds the influence of the soft modes, with particular attention to potassium tantalate and strontium titanate. The third chapter gives a theoretical treatment of the properties and possibilities of surface waves in crystals that are becoming of increasing interest for delay lines, amplifiers of sound waves, and other practical applications. The fourth chapter discusses the experimental methods and results of the dynamic shear properties of solvents and polystyrene solutions from 20 to 300 MHz, including a description of its materials and steady-flow properties. The final chapter deals with condensed helium, which requires quantum reactions to account for its properties. While the experimental data on solid helium are still insufficient, this chapter gives both a theoretical and an experimental account of sound propagation in solid helium, including various liquid forms. This book is recommended to both students and physicists conducting research on physical acoustics.

Table of Contents

  • Contributors


    Contents of Previous Volumes

    1 Light Scattering as a Probe of Phonons and Other Excitations

    I. Introduction

    II. Theory

    III. Experimental Apparatus and Techniques

    IV. Brillouin Experiments as an Extension of Ultrasonics

    V. Brillouin Scattering in the Study of Phase Transitions

    VI. Phonon Interactions with Other Excitations

    VII. Scattering from Other than Acoustic Phonons

    VIII. Stimulated Scattering of Light


    2 Acoustic Properties of Materials of the Perovskite Structure

    I. Introduction

    II. Ferroelectricity and Lattice Dynamics

    III. Theory of Ultrasonic Attenuation in Soft-Mode Materials

    IV. Potassium Tantalate

    V. Strontium Titanate

    VI. Suggestions for Further Work


    3 Properties of Elastic Surface Waves

    I. Introduction

    II. Formulation of the Problem

    III. Isotropic Substrates

    IV. Iterative Search Procedures

    V. Calculated Results

    VI. Piezoelectric Effects

    VII. Energy Flow

    VIII. Pseudosurface Waves


    4 Dynamic Shear Properties of Solvents and Polystyrene Solutions from 20 to 300 MHz

    I. Introduction

    II. Experimental Methods

    III. Materials and Steady-Flow Properties

    IV. Results


    5 The Propagation of Sound in Condensed Helium

    I. Introduction

    II. Theory of Sound Propagation in Superfluids

    III. 4He

    IV. Propagation of Sound in 3He-4He Solutions

    V. The Lambda Transition

    VI. 3He

    VII. Solid Helium



    Author Index

    Subject Index

Product details

  • No. of pages: 408
  • Language: English
  • Copyright: © Academic Press 1970
  • Published: January 1, 1970
  • Imprint: Academic Press
  • eBook ISBN: 9780323151672

About the Editor

Warren P. Mason

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