Titlebook: Nuclear Magnetic Resonance in Solids; Lieven Gerven Book 1977 Plenum Press, New York 1977 Diffusion.NMR.development.magnetic resonance.met

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High Resolution Double Resonance in Solids Recent Developments and ApplicationsDouble resonance techniques are useful among other things for the observation of high-resolution spectra in solids when (1) the spin species investigated (S in the following) has a low concentration and (2) there is a more abundant spin species (I) present in the sample. The various methods may be classified into two groups:

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The Effect of Molecular Motion on Line Widths and Relaxation Timeser specific terms of the hamiltonian. It is illustrated by considering two hypothetical kinds of motion of ethylene molecules:(a) rotation of the whole molecule about the CC bond through 180°, (b) rotation of half of the molecule about the CC bond through 180°.

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