Coherent Inelastic Neutron Scattering Response from Liquid Methanol

Publisher Website
Google Scholar
Abstract
Inelastic spectra of deuteromethanol at 200 K measured by triple-axis neutron spectroscopy are reported. A reconstruction of the dynamical structure factor from the observed spectral intensity has been achieved by means of a deconvolution procedure. A complementary analysis of the spectra in terms of simple phenomenological models (hydrodynamic and viscoelastic) is also presented. The experimental data indicates the existence of a propagating mode which becomes overdamped for wave vectors ≥ 0.6 Å−1.