Microscopic dynamics of glycerol: a QENS study

Abstract

We report on a quasielastic incoherent neutron scattering (QENS) experiment onliquid glycerol. QENS data were collected at thetemperature T=380 K and witharesolution(FWHM)R=55µeV.The analysis of the quasielastic signal enables us to draw a consistentpicture of the diffusive mechanism on a picosecond time scale and to compare with most recentmodels for glycerol dynamics. Model selection, performed with the fitting algorithm FABADA, givesus a preliminary description about the motions of the glycerol molecules in its liquid stat