title: Collective dynamics in liquid lithium, sodium, and aluminum.
abstract: Inelastic x-ray scattering data of liquid Li, Na, and Al for dynamical structure factors have been analyzed by proposing a semiempirical model. The model is based on the extension of the hydrodynamic model to the viscoelastic region so that it satisfies the first four nonvanishing sum rules. It has been found that the semiempirical model fits well with the x-ray scattering data for liquid metals investigated here. The physical meaning of the parameters is also discussed.
authors.affiliation: Department of Physics, Panjab University, Chandigarh-160014, India.
authors.forename: Shaminder
authors.initials: S
authors.lastname: Singh
authors.forename: K
authors.initials: K
authors.lastname: Tankeshwar