Lars P. Roobol

The polarization dependence of the viscosity of liquid3He

We describe measurements on the viscosity of liquid3He as a function of its nuclear polarization between 80 and 350 mK. The viscosity was measured with a vibrating wire viscometer, and the polarization of the liquid was enhanced using the Castaing-Nozières effect. The polarization dependence of the viscosity can be written as η ∝ 1+αΔ2, with α=3.5±1.5 at 2.7 MPa. In this experiment we improved on the problem of temperature inhomogeneities by miniaturization of the sample cell.

Field Dependence of the Superfluid 3He A1 and A2 Transitions

AbstractWe present new results on the magnetic field dependence of the superfluid transition temperatures of the A1and A2phases of3He. The

Viscosity of superfluid 3He in high magnetic field

T_c^{A_1 }

3He melting curves in high magnetic fields

transition temperature has been measured up to 15 T, the

Shear Viscosity of Superfluid {sup 3}He up to 15 Tesla

T_c^{A_2 }

Shear Viscosity of Superfluid ^{3}He in Magnetic Fields up to 15 tesla

up to 12 T, at the melting pressure. The temperature was measured by an in situ field independent glass thermometer. The results are in agreement with extrapolations from earlier experiments, and with calculations of the splitting