Short Range Triplet Correlations in Krypton Near the Critical Point

Abstract

Neutron diffraction data have been taken for two states on the 218 °K isotherm of krypton. The isothermal pressure derivative of the fluid structure factor is interpreted in terms of the triplet correlation function using an expansion due to Abe. It is concluded that three terms in Abe's expansion explain the data to a first approximation, but significant discrepancies remain.