Fundamentals of spin exchange : story of a paradigm shift /: story of a paradigm shift. ([2019])

• Record Type: Book
• Further Information: Note: Kev M. Salikhov.
• Authors: Salikhov, K. M (Kev Minullinovich)
• Contents: Preface.- Introduction.- Bimolecular spin exchange process.- Exchange interaction of two paramagnetic particles.- The nature of exchange interaction.- Spin Hamiltonian of the exchange interaction.- Exchange integral.- Exchange interaction of multielectronic systems. Electron delocalization and spin polarization.- Semiempirical estimates of the exchange integral.- Exchange integral in density functional theory.- Spin density matrix. Quantum spin coherence.- Elementary act of spin exchange. Spin dynamics of a pair of paramagnetic particles.- Equivalent and non-equivalent spin exchange.- Dipole-dipole spin-spin interaction.- Spin Hamiltonian of the dipole-dipole interaction of paramagnetic particles. -Spin dynamics of a pair of paramagnetic particles.- Comparison of spin dynamics in a pair of paramagnetic particles caused by exchange and dipole-dipole interactions.- Modified Bloch kinetic equations for the magnetic moment of a system of paramagnetic particles with allowance for spin exchange.- Spectroscopy of electron paramagnetic resonance as a method of choice for studying spin exchange.- Briefly about the use of spin exchange as a model bimolecular process.- A short history of the development of the theory of spin exchange.- References.- Theoretical calculations of the spin exchange rate constants.- Phenomenological theory.- Overview of Early Theories.- Approximation of sudden switching on and off of the exchange interaction in a collision.- Diffuse passage of the exchange interaction region.- Kinetic equations for the spin matrices of paramagnetic particles taking into account their bimolecular collisions.- Spin exchange between free radicals.- Spin exchange for solutions containing two types of paramagnetic particles with arbitrary electron spins.- Spin exchange between charged paramagnetic particles with electron spins S = 1/2 in electrolytes.- Kinetic equations for the spin density matrices, taking into account the spin dynamics caused by the dipole-dipole interaction, in non-viscous solutions.- References.- Manifestation of spin exchange and dipole-dipole interaction in electron paramagnetic resonance spectroscopy for dilute solution of paramagnetic particles.- General solution for the shape of the spectrum in the linear response case.- A new look at the role of the transfer of spin coherence. Collective modes of evolution of the spin coherence in the system.- Collective modes of motion of the spin coherence for model systems with two and three resonant frequencies.- Analysis of the EPR spectrum of nitroxyl radicals.- How can the equivalent spin exchange rate be extracted from the EPR spectra?.- General observations.- Method for determining the rate constant of equivalent spin exchange from the analysis of EPR spectra.- Effect of saturation of EPR spectra.- General solution for the shape of the spectrum under saturation conditions.- Analysis of the saturation effect for a model system with two resonant frequencies.- Analysis of the saturation effect for a model system with a Gaussian distribution of resonant frequencies.- Analysis of the saturation effect in the EPR spectrum of nitroxyl radicals.- Method for determining the rate of spin-lattice relaxation from the analysis of the effect of saturation of the EPR spectra.- Outlook (perspectives of application of the spin exchange for studying complex systems, spin probes, etc.).- Index.
• Publisher Details: Cham : Springer
• Publication Date: 2019
• Copyright Date: 2019
• Extent: 1 online resource, illustrations
• Subjects: 538/.364; Spin exchange; Electronic books
• Languages: English
• ISBNs: 9783030268220; 3030268225
• Related ISBNs: 9783030268213
• Notes: Note: Includes bibliographical references.; Note: Online resource; title from PDF title page (SpringerLink, viewed November 20, 2019).
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