Spin-Lattice Relaxation and Self-Diffusion in LiquidHe3

The spin-lattice relaxation time $T_1$ and the coefficient of self-diffusion $D$ were measured in liquid ${\mathrm{He}}^3$ in the temperature range between 0.35 and 3°K at SVP. Pulsed nuclear magnetic resonance in a field of 6800 G was used. The measured $T_1$, characteristic of bulk relaxation, was found to pass through a minimum value of about 290 sec in the vicinity of 1°K. Surface relaxation effects were examined and possible explanations for the great diversity of the $T_1$ values reported in the literature are given. Certain details of experimental procedure are described.