Incorporating coherent multiple scattering into modelling of small-q scattering data

Area of Science:

• Materials Science
• Crystallography
• Physics

Background:

• Coherent multiple scattering is a phenomenon where surface scattering becomes dominant over classical bulk scattering.
• This effect occurs in a transition region between classical bulk scattering (first-order Born approximation) and the quantum mechanical limit.
• It has been previously overlooked in scientific literature.

Purpose of the Study:

• To present a new example of coherent multiple scattering.
• To describe this phenomenon using surface scattering principles.
• To apply the Teubner-Strey model, commonly used for porous materials, to this scattering effect.

Main Methods:

• Small-angle light scattering (SALS) was employed to observe the phenomenon.
• The Teubner-Strey model was utilized to describe the observed surface scattering.
• Analysis focused on the transition region between bulk and surface scattering regimes.

Main Results:

• A novel instance of coherent multiple scattering was identified through SALS experiments.
• Surface scattering, as described by the Teubner-Strey model, effectively characterized the observed phenomenon.
• The findings highlight the significance of surface scattering in specific structural regimes.

Conclusions:

• Coherent multiple scattering is a relevant phenomenon in materials science, particularly in transition scattering regions.
• The Teubner-Strey model provides a suitable framework for describing surface scattering in such cases.
• This research expands the understanding of scattering phenomena in materials, including porous structures.