Multiple-scattering effects on incoherent neutron scattering in glasses and viscous liquids

Abstract

Incoherent neutron scattering experiments are simulated for simple dynamic models: a glass (with a smooth distribution of harmonic vibrations) and a viscous liquid (described by schematic mode-coupling equations). In most situations multiple scattering has little influence upon spectral distributions, but it completely distorts the wavenumber-dependent amplitudes. This explains an anomaly observed in recent experiments.

References in corpus (4)

• Broadband Dielectric Spectroscopy on Glass-Forming Propylene Carbonate
• Universal and non-universal features of glassy relaxation in propylene carbonate
• Propylene Carbonate Reexamined: Mode-Coupling $\beta$ Scaling without Factorisation ?
• Study of the Depolarized Light Scattering Spectra of Supercooled Liquids by a Simple Mode-Coupling Model

Cited by in corpus (5)

• Atomic Transport in Dense, Multi-Component Metallic Liquids
• MCViNE -- An object oriented Monte Carlo neutron ray tracing simulation package
• Absence of molecular mobility on nano-second time scales in amorphous ice phases
• Calcium Rubidium Nitrate: Mode-Coupling $\beta$ Scaling without Factorization
• The slow short-time motions of phospholipid molecules with a focus on the influence of multiple scattering and fitting artifacts