We review the tremendous advances in ultrafast X-ray science, over the past 15 years,
making the best use of new ultrashort X-ray sources including table-top or large-scale …

This review is focused on free-electron lasers (FELs) in the hard to soft x-ray regime. The
aim is to provide newcomers to the area with insights into: the basic physics of FELs, the …

X-ray free-electron lasers (XFELs) and table-top sources of x-rays based upon high
harmonic generation (HHG) have revolutionized the field of ultrafast x-ray atomic and …

It is well known that the solvent plays a critical role in ultrafast electron-transfer reactions.
However, solvent reorganization occurs on multiple length scales, and selectively …

The non-equilibrium dynamics of electrons and nuclei govern the function of photoactive
materials. Disentangling these dynamics remains a critical goal for understanding …

Light-driven molecular reactions are dictated by the excited state potential energy
landscape, depending critically on the location of conical intersections and intersystem …

Photoexcited molecular trajectories on potential energy surfaces (PESs) prior to
thermalization are intimately connected to the photochemical reaction outcome. The excited …

Photochemical reactions in solution are governed by a complex interplay between transient
intramolecular electronic and nuclear structural changes and accompanying solvent …

Fundamental studies of chemical reactions often consider the molecular dynamics along a
reaction coordinate using a calculated or suggested potential energy surface,,,–. But fully …

Light-driven chemical transformations provide a compelling approach to understanding
chemical reactivity with the potential to use this understanding to advance solar energy and …