Title: Ion density fluctuations in liquid metals: the strongly interacting ion-electron plasma
Author(s):

	L.E.Bove (Department Physique des Milieux Denses CNRS-IMPMC, Universit\`e Paris 6, F-75015 Paris, France ) ,
	C.Petrillo (Dipartimento di Fisica, Universitá di Perugia, I-06123 Perugia, Italy and CNR-INFM CRS-Soft, Roma) ,
	F.Sacchetti (Dipartimento di Fisica, Universitá di Perugia, I-06123 Perugia, Italy and CNR-INFM CRS-Soft, Roma) ,

An unified description of liquid metals dynamics based on an interacting two-component model for the ion-electron plasma is tempted. The propagation velocity of the collective modes in alkali and polyvalent metals, derived from inelastic neutron and x-rays scattering experiments, is compared with the estimates obtained by different theoretical approximations for the strongly-interacting plasma. Using accurate results for the electron gas correlation energy, and taking into account the ion finite size effects, a good overall description of a large set of liquid metals is obtained. The observed trend for the damping of the collective modes in liquid metals is also discussed within the framework of the two-component description.

Key words: liquid metals, dynamics, inelastic neutron and x-rays scattering, electron density
PACS: 61.12.-q, 61.25.Mv, 71.10.Ca