1998/08/07 by Christoph Theis, Theis, Christoph, R. Schilling +2
Chemistry · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #FOS: Physical sciences #Material Dynamics and Properties #Soft Condensed Matter (cond-mat.soft) #Solid-state spectroscopy and crystallography #cond-mat.soft
paper · pdf · doi:10.48550/arxiv.cond-mat/9808074
4 pages of LaTex, 3 figures
arxiv created 1998/08/07 · openalex publication_date 1998/08/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The intermediate scattering function S(q,t) for neutron scattering is expanded with respect to a complete set of correlation functions which describe the dynamical correlations in a molecular liquid. For the static ns-structure factor S(q) of a system of diatomic molecules the results of the expansion are compared with the exact results from a MD-imulation and it is shown that the Sears-expansion, which is commonly used to interpret such data, fails in the supercooled regime. The representation for S(q) is used to draw conclusions about the q-dependence and especially the origin of the prepeak.