Large Scale Structures: Small Angle Scattering and Reflectometry, Part 2 | NNSS 2025 at ORNL скачать в хорошем качестве

Large Scale Structures: Small Angle Scattering and Reflectometry, Part 2 | NNSS 2025 at ORNL

Large Scale Structures: Small Angle Scattering and Reflectometry, Part 2 Presented by Rana Ashkar 1st National Neutron Scattering School, 2025 Oak Ridge National Laboratory (ORNL) In this lecture, Rana Ashkar continues the exploration of large-scale structures using small-angle neutron scattering and reflectometry, building on foundational principles introduced in Part 1. The presentation deepens the discussion of how low momentum transfer measurements reveal nanoscale and mesoscale organization in complex materials systems. Ashkar further examines data interpretation strategies, including modeling approaches used to extract particle size distributions, correlation lengths, and interfacial profiles from scattering intensity patterns. The lecture discusses practical considerations in experiment design, contrast selection, and fitting methodologies that allow quantitative structural information to be obtained from small-angle and reflectometry measurements. Through additional science examples, the session illustrates how combining small-angle scattering and reflectometry provides complementary insights into bulk nanostructure and interface-specific architecture. The presentation emphasizes how careful analysis links scattering observables to real-space structural parameters in soft matter, biological assemblies, and advanced functional materials. Learn more about neutron science at ORNL: https://neutrons.ornl.gov Learn about the National Neutron Scattering School at ORNL: https://neutrons.ornl.gov/nns