Vapour pressure of isotopic liquids

Calculation of the mean force constants of the rare gases and the rectilinear law of mean force

“…The liquid-vapor isotope fractionation factor for a near classical fluid is directly related to the difference in the means of the Laplacian of the 11 12 potential energy in the liquid and vapor phases respectively. ' £na = ij (fi/kT) 2 ({j,~) t<V 2 U> c~< V 2 U> g ] (…”

Separating $^{39}$Ar from $^{40}$Ar by cryogenic distillation with Aria for dark matter searches

“…2, α 39−40 was calculated from the measured value of α 36−40 . Another publication [17] reports a lower value of α 36−40 than that reported in Sect. 2, that would lead to α 39−40 =1.0013 at the mean operating temperature of the column of 89.5 K. At this value one would have a decrease in B by about 25%.…”

The neon-neon interatomic potential from a study of the liquid-vapour isotope separation factor

“…These corrections were applied using the thermodynamic data given by McCarty and Stewart [9]. The term in square brackets ranged from 0-970 at 24.7 K to 0"595 at 38-6 K. The isotope separation factor has also been measured directly by mass spectrometric analysis of samples withdrawn from a system at equilibrium by Boato et al [14][15][16]. This work is in good agreement with In a values obtained from the work of Bigeleisen and Roth.…”