Electron Spin Relaxation in Liquids: Based on Lectures Given at the NATO Advanced Study Institute Held at “Spåtind,” Norway, in August 1971
L. Muus, Peter William Atkins
Springer US, 1972 - Science - 537 pages
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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Electron Spin Relaxation in Liquids: Based on lectures given at the NATO ...
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angles angular anisotropic applied approach approximation assume average becomes calculation Chapter Chem coefficients collision commute complete components condition consider contribution correlation function CORT coupling CQRT CSQZ defined density dependence derivative described determined diagonal diffusion discussed effects electron electron spin energy equation equilibrium example expansion experiments expression field fluctuations follows frequency given gives hyperfine important included independent integral interaction introduced isotropic lattice limit line shape linear linewidth liquid magnetic matrix elements means mechanism method molecular molecules momentum motion Note nuclear observed obtained operator orientation parameters perturbation Phys probability problem properties quantum mechanical relaxation represents resonance respectively result rotational secular shift simple solution spectral spectrum spin relaxation stochastic symmetry temperature tensor theory tion transformation transition variables width write written zero