Formalism and Interactions in NMR

Formalism for interactions: Feynman diagrams

Eulerian formalism of linear beam-wave interactions.

Product Operator Formalism for the Description of Nmr Pulse Experiments

6. I. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. Approaches for the Analysis of Pulse Experiments 2.1. Classical vector models 2.2. Semiclassical vector models 2.3. Density operator approach 2.4. Product operator formalism Nomenclature of Product Operators Pictorial Representations of Product Operators Evolution of Product Operators 5.1. Chemical shifts 5.2. Spin-spin couplings 5.3. Radio-freque...

OFFPRINT A thermodynamical formalism describing mechanical interactions

The dynamical behavior of an overdamped mechanical model devoid of any usual thermal effects is analyzed by a formalism that is similar to usual thermodynamics, and completely independent of any ad hoc assumption of a probability distribution of states in phase space of the mechanical model. It leads to the definition of a new entropy function, which does not coincide with the usual thermodynam...

A Pictorial Operator Formalism for NMR Coherence Phenomena

An NMR pulse experiment can often be more easily understood if it is described in a pictorial manner. In classical models spins are visualized as vectors, rotated by an alternating magnetic field during r.f. pulses, and between pulses, precessing at frequencies corresponding to each spin's local magnetic field. There are however many important phenomena such as multiquantum coherence, coherence...