Equivalent spin-1/2 nuclides

Magnetic Resonance of Systems with Equivalent Spin-1/2 Nuclides... 

The situation has been elucidated in a series of recent papers Magnetic resonance in systems with equivalent spin-1/2 nuclides. 13 1 38 39 These works deal with EPR examples, that is each with an impaired electron exposed to a set of n equivalent 1=1/2 nuclei. For our present purpose, we can deem the electron to have been replaced by some spin-bearing nucleus to be examined by NMR. 

S. M. Nokhrin, J. A. Weil and D. F. Howarth, Magnetic resonance in systems with equivalent spin-1/2 nuclides. Part 1. J. Magn. Reson., 2005,174, 209-218. 

It is my pleasure to present Volume 71 of Annual Reports on NMR, which consists of a collection of reports on advances in many scientific areas due to the application of NMR techniques. The volume commences with an account of Magnetic Resonance of Systems with Equivalent Spin-1/2 Nuclides by J.A. Weil Protein Dynamics as Reported by NMR is presented by Z. Gaspari and A. Perczel Virtual MRS Spectral Simulation and its Applications is covered by B.J. Soher, K. Young and L. Kaiser F.H. Larsen reports on Simulation of Molecular Motion of Quadrupolar Nuclei in Solid State NMR finally, NMR Studies of Disorder in Condensed Matter Systems is discussed by K.P. Ramesh. My thanks are due to all of these reporters for their interesting and timely contributions. 

Key Words NMR, EPR, Spin-spin coupling, Equivalent nuclides, Spin-Hamiltonian energies and eigenstates, Exchange degeneracy. 

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