Spin diffusion anisotropy in liquid He-3

We report new experiments on the transverse and longitudinal spin dynamics of liquid He-3 polarized by an 11.3T field. At the lowest temperatures prob ed, the transverse spin diffusion coefficient saturates with an apparent an isotropy temperature of T-a= 12+/-2 mK. This temperature dependence is in a ccord with the general idea of spin-diffusion anisotropy but the value of T -a is half that expected from extrapolating earlier experiments at a lower field. Strong magnetostatic effects in the form of long-lived spin modes ar e also observed for small gradients and small tipping angles.