Experimental Thermal Conductivity of Helium-3

Abstract

The thermal conductivity of liquid ${\mathrm{He}}^{3}$ at pressures of 0.11, 6.78, and 27.0 atm has been measured down to 0.06\ifmmode^\circ\else\textdegree\fi{}K. For each pressure the conductivity passes through a minimum, the temperature of the minimum decreasing with increasing pressure. At temperatures greater than \textonehalf{}\ifmmode^\circ\else\textdegree\fi{}K the thermal conductivity is nearly independent of pressure. The effect of pressure is to decrease the conductivity. The pressure effect increases monotonically down to the lowest temperature.