Field dependence of spin-lattice relaxation in α-nitrogen

The dependence of the nuclear spin-lattice relaxation time T1 on the strength of an applied magnetic field has been calculated for the α phase of solid nitrogen. The relaxation is thought to be primarily quadrupolar relaxation due to the librating nitrogen molecules. At all but the lowest temperatures the dominant relaxation processes are expected to be the anharmonic Raman and first-order Raman processes. On the assumption that a spin …