Since its inception in 1985 by Gerdau and coworkers at the storage ring DORIS (DESY, Hamburg), the excitation of Mössbauer transitions with x-rays from accelerator-driven sources became a widely used technique in many scientific disciplines at hard-x-ray synchrotrons worldwide, and recently also at XFEL sources.
So far, however, the method was focussed on Mössbauer isotopes with transition...
The use of polychromatic hard synchrotron radiation from insertion devices of high-energy storage rings such as The European Synchrotron - ESRF (France) or the Advanced Photon Source (USA) enables radioscopy with MHz repetition rates and nanosecond exposure time. Thanks to the availability of ultra-high speed cameras as well as highly dense scintillator materials with high light yield and...
Inelastic x-ray scattering at very high energies provides opportunities at least in two different new fields at European XFEL: Compton scattering spectroscopy for momentum density studies, and scattering-based imaging. I will discuss both: 1) The principles of Compton scattering spetroscopy and how it can be used in both fundamental research of electron momentum densities and in applied...
Metallurgy has enabled technological innovation for millennia, but scientific uncertainties still limit progress in shifting the processes to sustainable alternatives at scale. Of the ~30% of global emissions that originate from our supply chain, >10% of those emissions originate from complex metallurgical processes understood predominantly at the process scale. From ore extraction to forging...
This talk reviews current limitations of XFEL scattering techniques and discusses potential impact of the very hard XFEL pulses on the structure determination, while presenting relevant experimental data taken at SACLA.
The first half of this talk reviews the XFEL-induced damage (sample heating [1,2] and ultrafast electron excitations [3,4]), which is inevitable when using focused X-ray...
The combination of X-ray free electron lasers with energetic and intense pulsed lasers has started to revolutionize the experimental investigation of matter at high energy densities comparable to the interiors of planets and stars and numerous applications transiently requiring such conditions. With future sources possibly going beyond the current world record set by EuXFEL at 25 keV, new...
