Nitrogen, solid lattice frequencies

Fig. 18. The proton spin-lattice relaxation rate recorded as a function of the magnetic field strength plotted as the proton Larmor frequency for lysozyme samples. Dry ( ), hydrated to 8.9% ( ), 15.7% (O). 23.1% (A), and cross-linked in a gel ( ). The solid lines were computed from the theory. The solid lines are fits to the data using Eq. (4) with Rs given by Eq. (6). The two parameters adjusted are Rsl and b (97). The small peaks most apparent in the dry samples are caused by cross-relaxation to the peptide nitrogen spin (90,122).

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