Inelastic X-Ray Scattering Study of Solid and Liquid Li and Na

J. P. Hill; C.-C. Kao; W. A. C. Caliebe; D. Gibbs; J. B. Hastings

doi:10.1103/PhysRevLett.77.3665

Inelastic X-Ray Scattering Study of Solid and Liquid Li and Na

J. P. Hill, C.-C. Kao, W. A. C. Caliebe, D. Gibbs, and J. B. Hastings

Phys. Rev. Lett. 77, 3665 – Published 21 October 1996

Abstract

We present the first measurements of the dynamic structure factor of lithium and sodium in the liquid and solid phases, in the intermediate- $q$ regime. The overall shape of the response function is little changed on melting, implying that it is not determined by the long range order of the ion cores. Conversely, fine structure, observed in the Li data, disappears on melting, and is attributed to band-structure-induced transitions. At small $q$ , the plasmon lifetime and dispersion remain unchanged on melting.

Received 27 February 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.3665

Authors & Affiliations

J. P. Hill¹, C.-C. Kao², W. A. C. Caliebe², D. Gibbs¹, and J. B. Hastings²

¹Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
²National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973