Electron Spin Relaxation in Liquids

1. Front Matter

   Pages i-xiv

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2. Superoperators, Time-Ordering and Density Operators

   • L. T. Muus

   Pages 1-24

3. Stochastic Processes

   • J. Boiden Pedersen

   Pages 25-70

4. An Introduction to the Stochastic Theory of E.S.R. Line Shapes

   • S. J. Knak Jensen

   Pages 71-88

5. Projection Operators

   • O. Platz

   Pages 89-98

6. Cumulant Expansion

   • J. Aase Nielsen

   Pages 99-108

7. Linear Response Theory and Spin Relaxation

   • Irwin Oppenheim

   Pages 109-126

8. Two Approaches to the Theory of Spin Relaxation: I. The Redfield Langevin Equation; II. The Multiple Time Scale Method

   • J. M. Deutch

   Pages 127-163

9. ESR Relaxation and Lineshapes from the Generalized Cumulant and Relaxation Matrix Viewpoint

   • Jack H. Freed

   Pages 165-191

10. Spin Relaxation via Quantum Molecular Systems

    • Jack H. Freed

    Pages 193-212

11. Electron Spin Relaxation in Liquids. Selected Topics

    • Daniel Kivelson

    Pages 213-277

12. Spin — Rotation Interaction

    • P. W. Atkins

    Pages 279-312

13. Electron Spin Relaxation in 6S State Ions

    • G. R. Luckhurst

    Pages 313-339

14. Magnetic Resonance Line Shapes in Slowly Tumbling Molecules

    • Roy G. Gordon, Thomas Messenger

    Pages 341-381

15. Symmetry and the Slowly Tumbling Spin System

    • R. M. Lynden-Bell

    Pages 383-386

16. ESR Lineshapes and Saturation in the Slow Motional Region—The Stochastic Liouville Approach

    • Jack H. Freed

    Pages 387-410

17. Electron Spin Relaxation in Liquid Crystals

    • G. R. Luckhurst

    Pages 411-442

18. Two Problems Involving ESR in Liquid Crystals

    • J. I. Kaplan

    Pages 443-453

19. The ESR Line Shape of Triplet Excitons in Disordered Systems : The Anderson Theory Approach

    • J. P. Lemaistre, Ph. Kottis

    Pages 455-501

20. ESR Saturation and Double Resonance in Liquids

    • Jack H. Freed

    Pages 503-530

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.

• collision
• complexity
• electron spin
• environment
• experiment
• iron
• mechanics
• molecule
• quantum mechanics
• spectra
• spin
• spin exchange
• system

• Department of Chemistry, Aarhus University, Aarhus, Denmark

  L. T. Muus

• Physical Chemistry Laboratory, University of Oxford, Oxford, England

  P. W. Atkins

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