Resonant inelastic X-ray scattering (RIXS) is a powerful technique that combines
spectroscopy and inelastic scattering to probe the electronic structure of materials. RIXS is …

Free-electron lasers and high-harmonic-generation table-top systems are new sources of
extreme-ultraviolet to hard X-ray photons, providing ultrashort pulses that are intense …

The metal centres in metalloenzymes and molecular catalysts are responsible for the
rearrangement of atoms and electrons during complex chemical reactions, and they enable …

An overview of both experimental and theoretical results in the field of resonant scattering of
tunable soft and hard x-ray radiation is presented, with a main focus on the closely related …

The performance of several standard and popular approaches for calculating X-ray
absorption spectra at the carbon, nitrogen, and oxygen K-edges of 40 primarily organic …

We report the measurement of impulsive stimulated x-ray Raman scattering in neutral liquid
water. An attosecond pulse drives the excitations of an electronic wavepacket in water …

When materials are exposed to X-ray pulses with sufficiently high intensity, various
nonlinear effects can occur. The most fundamental one consists of stimulated electronic …

X-ray free-electron lasers (XFELs) provide intense pulses that can generate stimulated X-ray
emission, a phenomenon that has been observed and studied in materials ranging from …

The free-electron laser in Hamburg, FLASH, is the first extreme ultra-violet and soft X-ray
free-electron laser (FEL) user facility and has been continuously upgraded since its start in …

Coherent nonlinear spectroscopies and imaging in the X-ray domain provide direct insight
into the coupled motions of electrons and nuclei with resolution on the electronic length …