Based on lectures given at the NATO Advanced Study Institute held at "Spåtind," Norway, in August 1971
Buch, Englisch, 537 Seiten, Format (B × H): 178 mm x 254 mm, Gewicht: 1025 g
ISBN: 978-1-4615-8680-7
Verlag: Springer
Electron spin relaxation has established itself as an important experimental method for studying the details of molecular motion in liquids, and as a harsh testing ground for theoreticians. The theo retical difficulties are connected with the complexity of the mole cular motion, and the theoretical interest lies not only in its im portant consequences for the interpretation of experiments, but also in the fascination of a system in which a well-defined quantum me chanical component is in interaction with a complex quasi-classical environment. It is because the theories are concerned with such dissimilar but connected systems that the techniques involved are so numerous. Many of the standard manipulations of quantum mechanics must be brought to bear, and at the same time they must be combined with statistical techniques which are often of considerable sophis tication. The purpose of this volume is to present a survey of these techniques and their application to spin relaxation problems. No single volume can be exhaustive, but we believe that the contri butions to this volume are sufficiently broad to show how those who are concerned with spin relaxation problems think about the subject and circumvent, or expose, its difficulties. The first few Chapters (I-V) review the basic quantum mechani cal and statistical manipulations which are often used.
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Weitere Infos & Material
I. Superoperators, Time-Ordering, and Density Operators.- II. Stochastic Processes.- III. An Introduction to the Stochastic Theory of E.S.R. Line Shapes.- IV. Projection Operators.- V. Cumulant Expansion.- VI. Linear Response Theory and Spin Rotation.- VII. Two Approaches to the Theory of Spin Relaxation: I. The Redfield-Langevin Equation II. The Multiple Time Scale Method.- VIII. ESR Relaxation and Line Shapes from the Generalized Cumulant and Relaxation Matrix Viewpoint.- IX. Spin Relaxation via Quantum Molecular Systems.- X. Electron Spin Relaxation in Liquids. Selcted Topics.- XI. Spin-Rotation Interaction.- XII. Electron Spin Relaxation in 6S State Ions.- XIII. Magnetic Resonance Line Shapes in Slowly Tumbling Molecules.- XIIIA. Appendix: Symmetry and the Slowly Tumbling Spin System.- XIV. ESR Line Shapes and Saturation in the Slow Motional Region — The Stochastic Liouville Approach.- XV. Electron Spin Relaxation in Liquid Crystals.- XVI. Two Problems Involving ESR in Liquid Crystals.- XVII. The ESR Line Shape of Triplet Excitons in Disordered Systems: The Anderson Theory Approach.- XVIII. ESR Saturation and Double Resonance in Liquids.
