Effect of the Quasiparticle Mean Free Path on Poiseuille Flow in Normal LiquidHe3

Abstract
Direct observations of the effect of quasiparticle mean free path on the hydrodynamics of normal liquid He3 are presented. Both the viscosity and the mean free path are found to vary as T2 down to 1.5 mK. The relevance of these observations for other He3 experiments is mentioned.