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Persistent URL
http://purl.org/net/epubs/work/42381
Record Status
Checked
Record Id
42381
Title
Temperature-dependent next neighbour dynamics in liquid lead
Contributors
F Demmel (STFC Rutherford Appleton Lab.)
,
W S Howells (STFC Rutherford Appleton Lab.)
,
C Morkel
Abstract
The temperature dependence of the density correlation function at next-neighbour distances has been investigated for the liquid metal lead. This correlation function is a sensitive parameter for changes in the local environment 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 above the melting point. The derived generalized longitudinal viscosity shows a decrease near this temperature range. From these observations we suppose that solidification sets in on a microscopic level distinct above the melting point.
Organisation
ISIS
,
ISIS-OSIRIS
,
STFC
Keywords
Physics
Funding Information
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Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
J Phys-Condens Mat
20 (2008): 205106.
doi:10.1088/0953-8984/20/20/205106
deg_leadiop.pdf
2008
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