  3He confined in aerogel in the millikelvin temperature domain exemplifies a
Fermi liquid in the presence of disorder. In confined 3He systems, a solid
layer of 3He atoms forms on the confining medium. This system can then be
viewed as a model system for the study of the (strongly interacting) Fermi
liquid in contact with a (ferromagnetic) "2D-like" adsorbed solid. This
interaction, studied experimentally through NMR T2 experiments, is described in
the framework of the "fast exchange" model. A complete analytical descripion of
the model is given, explaining our measurements as well as related normal-state
confined 3He NMR literature.
