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 study of onset and decay, as well as control of ultrafast quantum coherence in many-
electron systems is in the focus of interest of attosecond physics. Interpretation of attosecond …

Intense attosecond X-ray pulses are key for ultrafast nonlinear spectroscopy and diffractive
imaging. Here we demonstrate the generation of terawatt-scale isolated attosecond pulses …

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 …

Controlling the formation and stoichiometric content of the desired phases of materials has
become of central interest for a variety of fields. The possibility of accessing metastable …

The Small Quantum Systems instrument is one of the six operating instruments of the
European XFEL, dedicated to the atomic, molecular and cluster physics communities. The …

Methods of coherent X-ray diffraction imaging of the spatial structure of noncrystalline
objects and nanocrystals (nanostructures) are considered. Particular attention is paid to the …

The ultrashort and intense pulses of X-rays produced at X-ray free electron lasers (XFELs)
have enabled unique experiments on the atomic level structure and dynamics of matter, with …

A reliable characterization of x-ray pulses is critical to optimally exploit advanced photon
sources, such as free-electron lasers. In this paper, we present a method based on machine …