| Abstract: | Abstract The continued fraction representation of the correlation function and a secant hyperbolic form of the memory function have been used to calculate the dynamical structure factor S(q, ω) of fluid Ar36 for the densities ranging from n? = 0.668 to 0.763 and a temperature to 120 K. The parameters of the memory function have been determined from the fourth and sixth frequency sum rules of S(q, ω). The predicted results for S(q, ω) have been compared with recent neutron scattering data. A good agreement has been achieved. Further, it is also found that the position of first minima of full width at half maxima of S(q, ω) shifts towards smaller wave number side with decrease in density while, the position of first maxima is independent of density. |
