Fundamentals of Spin Exchange Story of a Paradigm Shift
This book is a comprehensive summary of 50 years of research from theoretical predictions to experimental confirmation of the manifestation of spin exchange in EPR spectroscopy. The author unfolds the details of comprehensive state of the art of theoretic
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Fundamentals of Spin Exchange Story of a Paradigm Shift
Fundamentals of Spin Exchange
Kev M. Salikhov
Fundamentals of Spin Exchange Story of a Paradigm Shift
Kev M. Salikhov Zavoisky Physical-Technical Institute of Russian Academy of Sciences Kazan, Russia
ISBN 978-3-030-26821-3 ISBN 978-3-030-26822-0 https://doi.org/10.1007/978-3-030-26822-0
(eBook)
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“The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.” William Lawrence Bragg: Physicist 1957
Preface
This book is about the paradigm shift in spin exchange and its manifestations in Electron Paramagnetic Resonance (EPR). Since I entered the area of spin exchange research in the 1970s and until now the understanding of spin exchange has changed to the point that we now have to admit there is a definite shift in the paradigm of how we understand spin exchange, how we measure the rate of spin exchange using EPR methods, and how we can use the spin exchange. The paradigm shift came about as a result of the following achievements. Initially, when considering the elementary act of spin exchange in the course of bimolecular collisions, only a large exchange interaction was usually considered, while much smaller spin dependent interactions of individual paramagnetic particles were neglected. But these minor interactions can give major consequences for the spin exchange if the duration of collision of two particles is long enough. So in the new paradigm, we differentiate equivalent and nonequivalent spin exchange cases. A novel description of the spin dynamics for dilute solutions of paramagnetic partic
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