Justin Wark

TL;DR: In this article, the authors dealt with TTF/FLASH in the XFEL context, general layout of the X-FEL facility, the X FEL accelerator, undulators for SAES and spontaneous emission, infrastructure and auxiliary systems, commissioning and operation, project management and organization, cost and time schedule.

TL;DR: The experimental creation of a solid-density plasma at temperatures in excess of 106 kelvin on inertial-confinement timescales using an X-ray free-electron laser is reported and insights are obtained into the evolution of the charge state distribution of the system, the electron density and temperature, and the timescale of collisional processes.

TL;DR: Time-resolved x-ray diffraction with picosecond temporal resolution is used to observe scattering from impulsively generated coherent acoustic phonons in laser-excited InSb crystals and shows that the first step in the transition to a disordered state is the excitation of large amplitude, coherent atomic motion.

TL;DR: It is shown that, to first order in time, the dynamics are inertial, and constraints on the shape and curvature of the transition-state potential energy surface are placed, pointing toward analogies between this nonequilibrium phase transition and the short-time dynamics intrinsic to equilibrium liquids.

TL;DR: Three-dimensional imaging of the generation and subsequent evolution of coherent acoustic phonons on the picosecond time scale within a single gold nanocrystal by means of an x-ray free-electron laser is reported, providing insights into the physics of this phenomenon.