Bayesian Analysis of Quasielastic Neutron Scattering Data in Liquid Crystalline Phases of 7S5

Abstract

QENS data for the 7S5 liquid crystal (both hydrogenous and chaindeuterated samples) have been analysed from a probabilistic (Bayesian) point of view. When a physical model cannot be proposed for a given reorienting system, it is appropriate to use probability theory to assess how many quasi-elastic components there is most evidence for in the data. A “component” can be thought of both as a single Lorentzian or as a more complex, non-Lorentzian lineshape.