Laue Diffraction in the High Pressure Collaborative Access Team (HPCAT).*

Polychromatic beam diffraction technique is a powerful tool to investigate pressure induced processes in-situ and in-operando. Microstructural information including strain, orientation relations, twinning, crystal morphology is available across phase transitions, deformation, chemical processes. Using this information combined with theory, mechanisms and driving forces of such processes can be investigated. Experimental setup specifically optimized for application of high pressure Laue diffraction is available and open for users at HPCAT. Recent case studies including mechanism of Si I to Si II phase transition, pressure induced processes in Cu50Fe50 precipitates and high entropy alloys will be presented.