Nuclear susceptibility of liquid3He-4He solutions along the demixing line

Autor: Nacher, P. J., Shinkoda, I., Schleger, P., Hardy, W. N.
Zdroj: Journal of Low Temperature Physics; August 1991, Vol. 84 Issue: 3-4 p159-172, 14p
Abstrakt: Pulsed NMR measurements of the nuclear magnetic susceptibility of liquid3He-4He solutions at saturated vapor pressure are presented. They extend over the whole temperature range between 50 mK and 825 mK, for both concentrations of the coexisting dilute and3He-rich phases. The results have been compared to those obtained with pure3He, and the temperature dependence of the ratio of molar susceptibilities of coexisting phases is derived. The consequences on the efficiency of fractional distillation as a method to enhance nuclear polarization are discussed.
Databáze: Supplemental Index