Abstract
Short wavelength collective excitations in liquid Hg at room temperature have been investigated by high-resolution inelastic X-ray scattering. Clear evidence for the existence of propagating modes was found from the S( Q, ω) at constant Q up to about 17 nm −1. A positive dispersion in the Q– ω relation for these excitations was identified. This behavior is described in a simplified viscoelastic view.
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