Description of recent large-$q$ neutron inclusive scattering data from liquid $^4$He
Condensed Matter
2009-10-30 v1
Abstract
We report dynamical calculations for large- structure functions of liquid He at =1.6 and 2.3 K and compare those with recent MARI data. We extend those calculations far beyond the experimental range in order to study the approach of the response to its asymptotic limit for a system with interactions having a strong short-range repulsion. We find only small deviations from theoretical behavior, valid for smooth . We repeat an extraction by Glyde et al of cumulant coefficients from data. We argue that fits determine the single atom momentum distribution, but express doubt as to the extraction of meaningful Final State Interaction parameters.
Keywords
Cite
@article{arxiv.cond-mat/9706219,
title = {Description of recent large-$q$ neutron inclusive scattering data from liquid $^4$He},
author = {A. S. Rinat and M. F. Taragin and F. Mazzanti and A. Polls},
journal= {arXiv preprint arXiv:cond-mat/9706219},
year = {2009}
}
Comments
37 pages, 13 postscript figs