Normal Fluid Density of LiquidHe3-B

Abstract

Measurements of the normal fluid density of ${}_{}{}^3{}_{}{}^{}\mathrm{He}$-$B$ from a high-$Q$ oscillator are reported which cover the pressure range 2 to 29 bars. These results indicate that to the accuracy of the measurements, 2% in temperature and 4% in density, all pressure dependence can be accounted for by a standard weak-coupling Fermi-liquid correction. The resulting stripped normal fluid density, however, displays a significant strong-coupling contribution which conflicts with theory and the interpretation of several other experiments.