Nuclear Spin-Lattice Relaxation in Liquids. II

The spin-lattice relaxation in liquids has been investigated on the basis of a modified jump-diffusion model taking into account the continuous diffusion of the center of vibrations in a quasicrystalline vibrational state. An expression for the spin-lattice relaxation time $T_1$ is derived. The theory has been applied to water, and the theoretical parameters needed in the calculation are estimated from experimental data on cold-neutron scattering. It is again found that $T_1$ is not very sensitive to the details of the atomic motions in a liquid.