The ion dynamics of liquid mercury was investigated by inelastic neutron scattering. By exploiting an optimized high-resolution (similar to1 meV) experimental configuration, the dynamic response function was accurately measured. Collective excitations extending up to 0.6 Angstrom (-1) were observed with an associated velocity of 2100 +/- 80 m/s. This value is notably greater than the sound velocity, but it is provided by a simple Bohm-Staver calculation. The latter finding emphasizes those electron-related features in the ion dynamics, which are common to systems as different as polyvalent and alkali metals.
Neutron investigation of the ion dynamics in liquid mercury: Evidence for collective excitations
SACCHETTI, Francesco;PETRILLO, Caterina;
2001
Abstract
The ion dynamics of liquid mercury was investigated by inelastic neutron scattering. By exploiting an optimized high-resolution (similar to1 meV) experimental configuration, the dynamic response function was accurately measured. Collective excitations extending up to 0.6 Angstrom (-1) were observed with an associated velocity of 2100 +/- 80 m/s. This value is notably greater than the sound velocity, but it is provided by a simple Bohm-Staver calculation. The latter finding emphasizes those electron-related features in the ion dynamics, which are common to systems as different as polyvalent and alkali metals.File in questo prodotto:
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