Values of the Normal-Fluid Density andHe3Inertial Mass in Dilute Solutions ofHe3in SuperfluidHe4

Abstract
Values of the inertial mass of He3 in superfluid He4 calculated from experimental measurements of the velocity of second sound and osmotic pressure, and depending only on thermodynamic and hydrodynamic arguments and not on any microscopic model of He3 quasiparticle interactions, are presented. These values cover the range of He3 concentrations 1<X<6% and temperatures 0.03<T<0.6 K at saturated vapor pressure and at hydrostatic pressures of 10 and 20 atm.