The study of structure and collision processes of three-and four-body problems has seen an
extraordinary progress in the last decades. This progress has been in part associated to the …

Photoemission from solid targets includes the excitation and motion of electrons inside the
substrate, followed by their propagation in vacuum and detection. It thus depends on the …

In this paper the double ionization of helium by high-energy electron impact is studied. The
corresponding four-body Schrödinger equation is transformed into a set of driven equations …

Photoelectron emission from solid surfaces induced by attosecond pulse trains into the
electric field of delayed phase-coherent infrared (IR) pulses allows the surface-specific …

We apply Löwdin's canonical orthogonalization method to investigate the linearly dependent
problem arising from the variational calculation of atomic systems using Slater‐type orbital …

Recent progress in high-technology equipment enables the fabrication of quantum dots
such as GaAs, and GaAlAs confining a finite number of excitons and allowing for control of …

We introduce and study two-body Quasi Sturmian functions which are proposed as basis
functions for applications in three-body scattering problems. They are solutions of a two …

Attosecond photoelectron spectroscopy allows the observation of electronic processes on
attosecond time scales (1 as= 10− 18 s), as has been demonstrated in proof-of-principle …

In a recent contribution our group proposed a perturbative approach to deal with the open
problem of double ionization of helium by electron impact. The goal of this work is to delve …

The scattering problem of three particles interacting via Coulomb potentials is studied using
generalized parabolic coordinates. The scattering solutions are obtained by solving a driven …