Advances in attosecond science have led to a wealth of important discoveries in atomic,
molecular, and solid-state physics and are progressively directing their footsteps toward …

A new scientific frontier opened in 2009 with the start of operations of the world's first x-ray
free-electron laser (FEL), the Linac Coherent Light Source (LCLS), at SLAC National …

Free-electron lasers produce extremely brief, coherent, and bright laser-like photon pulses
that allow to image matter at atomic resolution and at timescales faster than the …

X-ray free-electron lasers provide unique opportunities for exploring ultrafast dynamics and
for imaging the structures of complex systems. Understanding the response of individual …

FLASH, the Free-electron LASer in Hamburg, is a worldwide unique source for extremely
bright ultra-short laser-like pulses tunable in a wide spectral range in the extreme ultraviolet …

Fourth generation accelerator-based light sources, such as VUV and X-ray Free Electron
Lasers (FEL), deliver ultra-brilliant (∼ 1012–1013 photons per bunch) coherent radiation in …

In the spectral range of the extreme ultraviolet at a wavelength of 13.3 nm, we have studied
the photoionization of xenon at ultrahigh intensities. For our ion mass-to-charge …

The design and performance of a soft X-ray free-electron laser (FEL) beamline of the SPring-
8 Compact free-electron LAser (SACLA) are described. The SPring-8 Compact SASE …

In the context of strong field–matter interaction, an increasing number of phenomena has
been found to be not understood within the single-active-electron approximation. For such …

The basic ideas of the B-spline R-matrix (BSR) approach are reviewed, and the use of the
method is illustrated with a variety of applications to atomic structure, electron–atom …