J. Phys. Colloques
Volume 41, Numéro C8, Août 1980
Fourth International Conference on Liquid and Amorphous Metals
Page(s) C8-222 - C8-225
Fourth International Conference on Liquid and Amorphous Metals

J. Phys. Colloques 41 (1980) C8-222-C8-225

DOI: 10.1051/jphyscol:1980857


P.A. Egelstaff1, J.B. Suck2, W. Gläser3, R. McPherson1 et A. Teitsma1

1  University of Guelph, Guelph, Ontario N1G 2W1, Canada.
2  Institut Laue-Langevin, 38042 Grenoble, France.
3  Physik Department, T.U. München, R.F.A.

The neutron diffraction patterns of liquid rubidium have been measured for momentum transfers between 0.4-2.4 Å-1 for twelve states between 328-473 K and 10-1200 atmospheres using the IN4 spectrometer at the Institut Laue-Langevin. These states were chosen to give isothermal, isochoric and isobaric data. In this paper we present the experimental results and the isothermal pressure derivatives of the liquid structure factor. The latter may be predicted from a model in which the electron fluid is assumed to control the position of the ions, so that when it is compressed all inter-ion distances vary as (density)-1/3. The experimental derivatives are close to the predictions of the model, and some interpretations of this observation are given.