STRUCTURE OF LIQUID SULFUR THROUGH POLYMER PERCUS-YEVICK THEORY

The static structure factor S(k) for liquid sulfur is calculated via a n analytical solution of the Polymer Percus-Yevick (PPY) equation usin g the fused hard sphere polyatomic model. As the first step in this di rection we have applied the ideal chain approximation in which formati on of ring polymers is neglected. The chain molecule is represented to be formed by hard sphere beads with two independent attractive sites displaced inside the hard core. The beads adjucent within a given chai n penetrate each other at a distance L between their centres. Theoreti cal results are comparted with experimental data. The theory gives the correct qualitative form for the small and large wavelength region of structure factor. The analysis of the S(k --> 0) limit is presented a lso.