TEMPERATURE DEPENDENT DIFFUSION CONSTANT AND MOBILITY OF POSITIVE ION IN BULK LIQUID HELIUM NEAR ABSOLUTE ZERO TEMPERATURES(Session I : Cross-Disciplinary Physics, The 1st Tohwa University International Meeting on Statistical Physics Theories, Experiments and Computer Simulations)

Abstract

Using the rate of momentum transfer through the scatterings among quasiparticles and phonons by ion, diffusion constant D(T) and the mobility of positive ion μ_+(T) are evaluated near absolute zero temperatures in bulk liquid ^4He. The diffusion constant D(T) has T^<-7> dependence while the mobility of positive ion varies with T^<-4>, which agrees with the experimental results.