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A General Nmr Spectral Density And Its Experimental Verification, A. M. Albano, Peter A. Beckmann, M. E. Carrington, F. A. Fusco, A. E. O'Neill, M. E. Scott

Physics Faculty Research and Scholarship

The authors develop a new general spectral density for use in interpreting nuclear spin-lattice relaxation measurements in molecular solids where molecular and/or intramolecular reorientation is responsible for the relaxation. They show that the simplest case of the general theory fits both the temperature and Lamor frequency dependence of some very complicated relaxation measurements which could not be previously fitted using several standard spectral densities. The relationship of the spectral density to a distribution of molecular potentials is briefly outlined.