Abstract
The temperature dependence of the density correlation function at next neighbor distances has been investigated for the liquid metal rubidium. This correlation function is a sensitive parameter for changes in the local structure and its Fourier transform was measured in a coherent inelastic neutron scattering experiment. The zero frequency amplitude related to the long time decay of density fluctuations decreases in a nonlinear way and indicates a change in dynamics around $1.5{T}_{\mathrm{melt}}$. The derived generalized longitudinal viscosity shows a decrease near this temperature. These observations are in agreement with the supposition that solidlike units may melt at this temperature.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
