This review provides a comprehensive overview of the applications of helium nanodroplets
in the study of ensembles of atoms and molecules, ie clusters and complexes. These …

Since the first attempts to calculate the helium ground state in the early days of Bohr-
Sommerfeld quantization, two-electron atoms have posed a series of unexpected …

Symmetric Lorentzian and asymmetric Fano line shapes are fundamental spectroscopic
signatures that quantify the structural and dynamical properties of nuclei, atoms, molecules …

The concerted motion of two or more bound electrons governs atomic and molecular, non-
equilibrium processes including chemical reactions, and hence there is much interest in …

A rather complete understanding is emerging of the process of full fragmentation of the
helium atom following absorption of a single photon. In this review the major experimental …

We report on the experimental observation of a strong-field dressing of an autoionizing two-
electron state in helium with intense extreme-ultraviolet laser pulses from a free-electron …

We present an analytical model capable of describing two-photon ionization of atoms with
attosecond pulses in the presence of intermediate and final isolated autoionizing states. The …

Helium droplets represent a cold inert matrix, free of walls with outstanding properties to
grow complexes and clusters at conditions that are perfect to simulate cold and dense …

In this comprehensive review, we explore interatomic and intermolecular correlated
electronic decay phenomena observed in superfluid helium nanodroplets subjected to …

We investigate the photoionization spectrum of helium by attosecond XUV pulses both in the
spectral region of doubly excited resonances as well as above the double ionization …