Preface Acknowledgments List of Acronyms Notations Index 1.Introduction 2. Historical Survey 3.The Theory of Surface Phonons 4. Surface Forces and Structures from the Dispersion of Surface Phonons 5.Theoretical Methods of Surface Dynamics 6.The Atom-Surface Potential 7.Theory of Atom-Surface Phonon Scattering: 8.Theory of Atom-Surface Phonon Scattering: 9. Experimental Methods 10.Intensities and Resolution of HAS Experiments 11.Experimental Results...