Anomalous magnetic-field dependence of positive ion mobility in normal liquid He-3 - art. no. 235301

The positive ion mobility in normal liquid He-3 has been measured as a func tion of external magnetic field up to 15 T at temperatures down to 3 mK. At 3.2 mK, the field dependence is found to exhibit a pressure-dependent broa d peak followed by a large decrease at pressures above 20 bars. On the othe r hand, at 20 mK, a monotonic decrease with increasing the magnetic field h as been observed in the same pressure region. Possible origins for these an omalous behaviors are discussed.