We examine the possibility of using NMR and other measurements on very weak solutions of3He in liquid4He to investigate the superfluid phase transition. It is found that even for these very weak solutions the mass (Dm) and spin (Ds) diffusion coefficients associated with the3He behave in radically different ways:Dm is predicted to diverge as T approaches Tλ from above as (T-Tλ)-1/3, while the behavior of Ds depends on the type of experiment, and for the ordinary spin-echo type has no particular singularity.
ASJC Scopus subject areas
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Materials Science(all)