  We report results of experiments with superfluid 3He confined in aerogels
with parallel strands which lead to anisotropic scattering of 3He
quasiparticles. We vary boundary conditions for the scattering by covering the
strands by different numbers of atomic 4He layers and observe that the
superfluid phase diagram and the nature of superfluid phases strongly depend on
the coverage. We assume that the main reason of these phenomena is a magnetic
channel of the scattering which becomes important at low coverages. Our results
show that the magnetic channel also may be important in other Fermi systems
with the triplet pairing.
