MUON SPIN RELAXATION IN SOLID HE-3

Muon spin relaxation in solid He-3 exhibits a nonmonotonic temperature dependence. It is shown that this dependence is associated solely wit h the magnetic-dipole interaction. The observed line narrowing does no t agree with the hopping mechanism of the motion of a positively charg ed particle within the scope of the well-known activation law. An anom alous increase of the relaxation rate under the action of an electric field was found at low temperatures. (C) 1995 American Institute of Ph ysics.