1st Edition

Understanding Spin Dynamics

ISBN 9789814463492
Published October 16, 2015 by Jenny Stanford Publishing
270 Pages 18 Color & 62 B/W Illustrations

USD $105.00

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Book Description

Experimental methods employing spin resonance effects (nuclear magnetic resonance and electron spin resonance) are broadly used in molecular science due to their unique potential to reveal mechanisms of molecular motion, structure, and interactions. The developed techniques bring together biologists investigating dynamics of proteins, material science researchers looking for better electrolytes, or nanotechnology scientists inquiring into dynamics of nano-objects. Nevertheless, one can profit from the rich source of information provided by spin resonance methods only when appropriate theoretical models are available. The obtained experimental results reflect intertwined quantum–mechanical and dynamical properties of molecular systems, and to interpret them one has to first understand the quantum–mechanical principles of the underlying processes.

This book concentrates on the theory of spin resonance phenomena and the relaxation theory, which have been discussed from first principles to introduce the reader to the language of quantum mechanics used to describe the behaviour of atomic nuclei and electrons. There is a long way from knowing complex formulae to apply them correctly to describe the studied system. The book shows through examples how symbols can be "replaced" in equations by using properties of real systems to formulate descriptions that link the quantities observed in spin resonance experiments with dynamics and structure of molecules.

Table of Contents


Classical description of spin resonance

Larmor precession and Bloch equations

Introduction to spin relaxation

The nature of relaxation processes

Correlation functions and spectral densities

The simplest relaxation formula

Bi-exponential relaxation

Formal theory of spin relaxation

The concept of density operator

The Liouville von Neumann equation and relaxation rates

Liouville space and Redfield kite

Validity range of the perturbation theory

Spin relaxation in time domain

Spin resonance lineshape analysis

The concept of spin resonance spectrum

Spin resonance spectrum and motion

Examples of spin resonance spectra

Rigid spectra and the lineshape theory

Spin resonance spectra and correlation functions

Spin relaxation – a more general approach

Generalized spectral densities

Residual dipolar interactions

Interference effects

Cross-correlation effects

Hierarchy of spin relaxation processes

Electron spin resonances of spins 1/2

ESR spectra and scalar interactions for 15N systems

ESR spectra and scalar interactions for 14N systems

ESR spectra at low frequencies

g - tensor anisotropy

Nuclear spin relaxation in paramagnetic liquids

Proton relaxation and hyperfine coupling

Translational dynamics in paramagnetic liquids

Effects of electron spin relaxation

Hilbert space and spin relaxation

Spin resonance beyond perturbation range

Intermediate spin resonance spectra

Stochastic Liouville formalism

2H NMR spectroscopy and motional heterogeneity

2H NMR spectroscopy and mechanism of motion

Deviations from perturbation approach

Dipolar relaxation and quadrupolar interactions

Quadrupole relaxation enhancement (QRE)

Perturbation approach to Quadrupole Relaxation Enhancement

Polarization transfer

QRE and internal dynamics of molecules

Effects of mutual spin interactions

ESR spectra for interacting paramagnetic centres

Interference effects for nitroxide radicals

Spin interactions and molecular geometry

Dynamic Nuclear Polarization

Principles of Dynamic Nuclear Polarization (DNP)

DNP and ESR Spectrum

Anisotropic and Internal Dynamics

Anisotropic rotation

Internal dynamics


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Danuta Kruk is associate professor at the Faculty of Mathematics and Computer Science, University of Warmia and Mazury in Olsztyn, Poland. She received her master’s and doctorate degrees in physics as well as attained her habilitation from the Jagiellonian University, Krakow, Poland. She has also been associated with Physical Chemistry Arrhenius Laboratory, Stockholm University, Sweden; Faculty of Physics, Technical University Darmstadt, Germany; and Experimentalphysik, University of Bayreuth, Germany. She is author of the book Theory of Evolution and Relaxation of Multi-Spin Systems. Her current research interests are theory of spin resonances and relaxation processes, dynamics of condensed matter including molecular and ionic liquids, polymers and biological macromolecules, spin relaxation in paramagnetic and superparamagnetic systems, transport phenomena and dynamics of electrolytes and nanofluids, and dynamical properties of solids.