Spin-polarized 3He : liquid gas equilibrium

S. Stringari , M. Barranco , A. Polls , P.J. Nacher (1) , F. Laloë (1)

1 LSH-ENS - Laboratoire de Spectroscopie Hertzienne de l'ENS

We study the effects of nuclear polarization M on the liquid-gas equilibrium phase diagram of 3He, in situations where the saturating vapour pressure increases or decreases as a function of M, and where a metamagnetic instability may occur in the liquid phase. Numerical predictions are given within the frame of a phenomenological model with parameters fitted to reproduce accurately the saturating vapour pressure of the unpolarized liquid as well as its magnetic susceptibility. At temperatures of the order of 0.5 K situations are found where interesting phenomena such as liquid overpolarization and metamagnetic plateaus occur.

Mots clés: liquid helium 3; liquid vapour transformations; metamagnetism; nuclear polarisation in liquids and solids; phase diagrams

Domaines: Articles anciens

S. Stringari, M. Barranco, A. Polls, P.J. Nacher, F. Laloë. Spin-polarized 3He : liquid gas equilibrium. Journal de Physique, 1987, 48 (8), pp.1337-1350. ⟨10.1051/jphys:019870048080133700⟩. ⟨jpa-00210560⟩