HIGH-RESOLUTION MEASUREMENTS OF THE LARMOR FREQUENCY IN NORMAL-LIQUIDHE-3

Measurements have been made of the Larmor frequency of the normal He-3 Fermi liquid with resolution better than 1/10(7). The Larmor frequenc y was observed to increase on increasing temperature from the superflu id transition to above 40 mK in a constant 0.12 T external magnetic fi eld. The shift has a temperature dependence that is negative and appro ximately proportional to the inverse temperature. The magnitude is of order 1/10(6) and depends on pressure in the investigated range 0.3 to 21.7 bars, decreasing substantially at the highest pressures.