A generalized mean-squared displacement from inelastic fixed window scans of incoherent neutron scattering as a model-free indicator of anomalous diffusion confinement

摘要: Elastic fixed window scans of incoherent neutron scattering are an established and frequently employed method to study dynamical changes, usually over a broad temperature range or during process such as conformational change in the sample. In particular, apparent mean-squared displacement can be extracted via model-free analysis based on solid physical interpretation effective amplitude molecular motions. Here, we provide new account elastic inelastic scans, defining generalized for all energy transfers. We show that this principle contains information real mean-square accessible instrumental time window. The derived formula provides clear understanding effects resolution displacement. Finally, used indicator confinement within