Speaker
Description
Functional processes transform between different material properties, occur on ultrafast timescale, and out of equilibrium. Such can be particularly complex in condensed matter, as the interactions depend on processes on multiple time and length scales. Free Electron Lasers (FELs) provide here new experimental insight with ultrafast X-ray probes for electronic and atomic structures. Science projects from the first years of FEL science show a development from measuring atomic structures to electronic transitions, from measuring kinematic time scales to dynamic processes. They reveal new opportunities and demand for new and specialized instrumentation. Important scientific and technical milestone examples, as well as the motivation and new instrumentation at the SwissFEL facility are discussed.