Simulation of bright and dark diffuse multiple scattering lines in high-flux synchrotron X-ray experiments

Author(s)

Estradiote, Mauricio B. ; Nisbet, A. Gareth A. ; Penacchio, Rafaela F. S. ; Miranda, Marcus A. R. ; Calligaris, Guilherme A. ; Morelhaao, Sergio L.

• Document type: Journal article
• Source: JOURNAL OF APPLIED CRYSTALLOGRAPHY; v. 58, p. 10-pg., 2025-06-01.

Abstract

We present a theoretical framework for understanding diffuse multiple scattering (DMS) in single crystals, focusing on diffuse scattering Bragg channels. These channels, when probed with high-flux low-divergence monochromatic synchrotron X-rays, provide well defined visualizations of Bragg cones. Our main contribution lies in modelling the intensity distribution along these lines by considering diffuse scattering (DS) around individual reciprocal-lattice nodes. The model incorporates contributions from both general DS and mosaicity, elucidating their connection to second-order scattering events. This comprehensive approach advances our understanding of DMS phenomena, enabling their use as probes for complex material behaviour, particularly under extreme conditions. (AU)

• FAPESP's process: 22/09531-8 - X-ray diffuse multiple scattering with high flux synchrotron sources: applications in thermoelectrics and topological insulators
• Grantee: Maurício Bastos Estradiote
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 23/10775-1 - Implications of the Physics of Strongly Correlated Systems in X-Ray Scattering of High Energy
• Grantee: Sérgio Luiz Morelhão
• Support Opportunities: Regular Research Grants
• FAPESP's process: 21/01004-6 - Dynamic X-ray diffraction with advanced synchrotron radiation sources: methodologies for applications in biological and material systems technological
• Grantee: Rafaela Felix da Silva Penacchio
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)