Magnetic field saturation in the Riga dynamo experiment

After the dynamo experiment in November 1999 [A. Gailitis et al., Phys. Rev . Lett. 84, 4365 (2000)] had shown magnetic field self-excitation in a spir aling liquid metal flow, in a second series of experiments emphasis was pla ced on the magnetic field saturation regime as the next principal step in t he dynamo process. The dependence of the strength of the magnetic field on the rotation rate is studied. Various features of the saturated magnetic fi eld are outlined and possible saturation mechanisms are discussed.