Search

Coulomb explosion imaging provides real space/time resolution of molecular processes. Here the authors develop a generative model to reconstruct molecular geometries from ion momentum measurements which extends the system size accessible with this technique.

Spectroscopic measurements confirm that when water is adsorbed on drops of an alkali alloy at low pressure a gold-coloured metallic layer forms as electrons rapidly move from the drop into the water.

The wave nature of light and particles is of interest to the fundamental quantum mechanics. Here the authors show the double-slit interference effect in the strong-field ionization of neon dimers by employing COLTRIMS method to record the momentum distribution of the photoelectrons in the molecular frame

Core ionization of ions in solution leads to decay processes involving interaction with the environment. Here, the authors report a non-local X-ray emission process in core-ionized Na⁺ and Mg²⁺ that can be used to probe the ions’ solvation shells.

The Authors demonstrate imaging of separation and formation of chemical bonds during an elimination reaction by means of intense femtosecond X-rays pulses.

Ultrafast breaking of the molecular symmetry is a key process in photochemistry. Here the authors show direct observation during internal conversion of a heterocyclic molecule using Coulomb explosion imaging supported by simulations.

The complex equilibria of sulfur compounds at the liquid-vapor interface play key roles in atmospheric processes. Here, using X-ray photoelectron spectroscopy, Raman spectroscopy, and molecular dynamics simulations the authors determining pKa values and tautomer ratios at the air-vapor interface in a liquid microjet.

X-ray triggered non-local processes, such as Intermolecular Coulombic Decay, are shown here to selectively probe solvation-shell molecules in solution and provide new information on their electronic structure and on ion-pair formation.

A radiation damage cycle in X-ray-ionized solvated Mg ions is reported by the authors leading to production of water radicals and low-energy electrons. The Mg ion ends in its initial state quickly and can restart the cycle, multiplying the local damage.

Measuring photoionization time delays is an interesting and challenging topic. Here the authors demonstrate a method to measure the photoionization time delays using inner-shell ionization of CO molecule.

Visualizing the structural dynamics of isolated molecules would help to understand chemical reactions, but this is difficult for complex structures. Intense femtosecond X-ray pulses allow the full imaging of exploding photoionized molecules, in this case, with eleven atoms.

The contribution of non-ideal mixing for the crystallization of supercooled mixtures of argon and krypton is reported, showing that this process is well described by classical crystal growth theories when such thermodynamics is considered.

Compton scattering experiments off helium atoms for photon energies close to the ionization threshold reveal that electrons are not only emitted in the direction of the momentum transfer but also backwards.

When an electron with specific orbit — either clockwise or anticlockwise — in a rare gas atom is selectively ionized, the remaining ion will possess a stationary ring current, which can be probed in a time-delayed second ionization step.