An experimental study of two‐body time correlations in gaseous xenon

Abstract

The Van Hove scattering function, S(Q,ω), has been measured for xenon gas at five state conditions along the 30 C isotherm using the time‐of‐flight correlation spectrometer at Oak Ridge National Laboratory (ORNL). The data are normalized by division of S(Q,ω) by the static structure factor so that at each Q value the normalized function has unit area: these curves are bell‐shaped and are compared to two kinetic calculations by Dufty and Lindenfeld (unpublished). At the lowest density (0.185×10²² atom/cm³) the experimental data are consistent with the perfect gas and the two models. But at the highest density (0.458×10²² atom/cm³) the data probably differ significantly from these models.