COHERENT PRECESSION OF MAGNETIZATION IN HE-3-A IN THE COLLISIONLESS REGION

Magnetization precession in the A phase of He-3 near the transition te mperature in the collisionless region was investigated. The solution d escribing a coherently precessing two-domain structure in a nonuniform external field was found. In contrast to the B phase, in the limit of a uniform external field this solution transforms into uniform spin p recession. The behavior of the A and B phases of He-3 in different reg imes (hydrodynamic and collisionless) is compared. (C) 1995 American I nstitute of Physics.