عنوان

Quantum Aspects of Molecular Motions in Solids :

شابک

3642719147

شابک

9783642719141

شماره

b573043

عنوان اصلي

Quantum Aspects of Molecular Motions in Solids :

نام عام مواد

[Book]

ساير اطلاعات عنواني

Proceedings of an ILL-IFF Workshop, Grenoble, France, September 24-26, 1986

نام نخستين پديدآور

edited by Anton Heidemann, Andreas Magerl, Dieter Richter, Michael Prager, Tasso Springer.

محل نشرو پخش و غیره

Berlin, Heidelberg

نام ناشر، پخش کننده و غيره

Springer Berlin Heidelberg

تاریخ نشرو بخش و غیره

1987

نام خاص و کميت اثر

(xii, 221 pages 117 illustrations)

عنوان فروست

Springer proceedings in physics, 17.

متن يادداشت

I Rotational Tunneling I --; Potentials and Phonon Interaction --; The Temperature Dependence of Rotational Tunneling --; Simulation of a Quantum System at Finite Temperatures --; The Rotational Potential of Solid Nitromethane --; The Orientation of the Rotational Potential in the Crystal Frame: (NH4)2PtCl6 --; Inelastic Neutron Scattering Study of Methyl Tunnelling in?-Crystallised Toluene. --; Tunnelling Spectroscopy and Dynamics of CH3 in a Homologous Series of Ketones --; NH4+ Motions in NH4MF3 Cubic Perovskites --; Spectroscopic Raman Study of Trifluoroperovskites of Ammonium Under High Pressure --; II Rotational Tunneling II --; Coupled Systems --; Rotational Tunneling of Coupled Groups Studied by Inelastic Neutron Scattering. --; Study of the Dipolar Proton Spin System in Lithium Acetate with NMR Dispersion Spectroscopy --; Tunnelling of Ammine Ligands in Nickel Hexammine Iodide --; The Free Rotor, NH3, in Metal Hexammine Ions --; Tunnel Spectroscopy by Dipolar-Driven NMR. K. --; Zeeman-Tunnel Resonance Line Shapes in NMRRR Investigations of Rotational Tunneling. --; Coupled Tunneling of Methyl Groups in Solids as Studied by Proton NMR Method. --; Tunneling of CH3 Groups in Molecular Crystals of the X(CH3)n Type. --; III Rotational Tunneling III --; Surfaces, Isotope Effect, Matrix Isolation --; Hindered Rotation and Tunnelling of Adsorbed Species --; Rotational Tunneling of Matrix-Isolated Tetramethyl Compounds --; Rotational Excitations in (CH4)1?xKrxSolid Mixtures --; Quantum Rotation of Ammonia Molecules in Disordered Ca(NH3)6 --; The Methyl Rotational Potentials of Various Isotopic Methyl Iodides and Their Coupling to Phonons --; Partially Deuterated Methyl Groups in Molecular Solids: The System 4-CH2D-C5H4N with an Original Sixfold Symmetric Barrier --; Calorimetric and Dielectric Study of Partly Deuterated Ammonium Hexachlorostannate --; Tunneling to Reorientation Transition Effects in High Field 2H-NMR Spectra of ND4+ Ions. --; IV Translational Tunneling --; Influence of Phonons and Electrons on Low-Temperature Translational Tunneling. --; Quantum Diffusion of Light Interstitials in Metals --; The Influence of Electrons on the Tunneling State of a Hydrogen Atom in a Metal. --; H and D Tunneling in Nb: Dependence on Defect Concentration and Trapping Center. --; Sound Velocity Measurements on Hydrogen-Doped Niobium in the Superconducting and Normal States --; Quantitative Theory of the Tunnel Level Splitting for Hydrogen Trapped at Oxygen in Niobium. --; Debye-Waller Peculiarity in Phonon-Assisted Tunneling --; Quantum Diffusion Above?Debye/2. --; Hydrogen Diffusion by Tunneling in Metals --; Optical Studies of Proton Tunneling and Relaxation in Benzoic Acid --; V Disordered Systems --; How Universal Is the Spectral Density of Tunneling States in Glasses? --; Very Low Frequency Elastic Loss of PMMA Below 5 K --; Ultrasonic Attenuation Study of Two-Level Systems in Neutron- Irradiated Quartz upon Heat Treatment --; The One-Dimensional Quantum Rotator H2Sīn Several Alkali Halides. --; Relaxation Times of k?0 Rotons in Parahydrogen Crystals at Low Concentrations of Orthohydrogen Impurities --; Index of Contributors.

متن يادداشت

The Institut Max von Laue-Paul Langevin (ILL) in Grenoble regularly orga nizes workshops that deal with various applications of neutrons in physics, chemistry, biology and materials science. The workshop "Quantum Aspects of Molecular Motions in Solids" was jointly organized by the Institut Laue Langevin and the Institut fiir Festkorperforschung at the Kernforschungsan lage Jiilich and took place in September 1986 in Grenoble. Tunneling phenomena in molecular crystals were first observed with macro scopic methods like specific heat experiments and later also with NMR. Fi nally, the development of high resolution neutron scattering techniques like neutron backscattering led to direct spectroscopic observation of the tunnel split ground state. This breakthrough was achieved in 1975 at Jiilich. Since then the large variety of high-resolution techniques available in combination with high neutron flux have turned ILL into the leading laboratory in the field of tunneling spectroscopy. Since 1980 regular meetings of scientists involved in this topic have been organized every two years (Jiilich, Braunschweig, Nottingham) and have led to an intense exchange of ideas and experimental results. The present workshop is the fourth of this series and the first with published proceedings presenting the state of the art in this field. The eight review articles introduce scientists not involved in the subject to the actual discussion. Sessions on translational tunneling of light interstitials in metals as well as on tunneling phenomena in amorphous substances provide bridges to adjacent fields.

موضوع مستند نشده

Physics.

موضوع مستند نشده

Quantum theory.

شماره رده

نشانه اثر

مستند نام اشخاص تاييد نشده

edited by Anton Heidemann, Andreas Magerl, Dieter Richter, Michael Prager, Tasso Springer.

مستند نام اشخاص تاييد نشده

Andreas Magerl

مستند نام اشخاص تاييد نشده

Anton Heidemann

مستند نام اشخاص تاييد نشده

Dieter Richter

مستند نام اشخاص تاييد نشده

Michael Prager

مستند نام اشخاص تاييد نشده

T Springer

نام الکترونيکي

نوع ماده

[Book]

تكميل شده

Y