✍ Scribed by R.H. Higley; D.T. Sprague; R.B. Hallock
No coin nor oath required. For personal study only.
Evolution of 3He from a 2-d Fermi liquid to bulk-like liquid on thin 3He-4He mixture films shows stepped structure in magnetization and NMR relaxation times as a function of 3He coverage da.
Spin-echo measurements in a weakly polarizing field over the temperature range 30 < T < 250 mK for 0.01 < d3 < 4 layers are compared at three 4He coverages d4 = 1.77,2.14,2.91 atomic layers. 3He-4He mixture films in which the 4He is thick enough so that adsorbed 3He is fluid rather than solid provide an excellent system for studies of the evolution of the 3He from a dilute 2-d gas to bulk-like fluid. They may also allow studies of the nature of the 4He surface. NMR spin-echo measurements of the magnetization (1) and relaxation times of the 3He in such mixture films adsorbed on Nuclepore show interesting structure as a function of 3He coverage.
📜 SIMILAR VOLUMES
We have studied superfluid 3He-4He mixtures quenched into nonequilibrium states inside the miscibility gap by means of second sound . From the results for the second sound velocity we conclude that the superfluid density in the metastable state is well described by extrapolation from equilibrium val