Electron-impact ionization of the hydrogen atom is the prototypical three-body Coulomb
breakup problem in quantum mechanics. The combination of subtle correlation effects and …

We review topics of current interest in the physics of electronic, atomic and molecular
scattering in the vicinity of thresholds. Starting from phase space arguments, we discuss the …

The substantial progress that has occurred during the 1990s in the field of electron-atom-
collision theory is discussed. We show how a solution of a small-model three-body problem …

The past decade has seen extraordinary theoretical progress in the field of fully
kinematically resolved atomic electron-impact ionisation, and its closely related field of …

The convergent close-coupling method is shown to overcome the remaining discrepancies
with experiment of electron-hydrogen ionization. Consequently, this method is able to …

We have measured absolute triple differential cross sections for photo-double ionization of
helium at 20 eV excess. The measurement covers the full ranges of energy sharing and …

Exterior complex scaling enables one to solve the time-independent Schrödinger equation
for three charged particles without explicitly imposing the asymptotic boundary condition for …

We determine, both experimentally and theoretically, the fully resolved fivefold differential
cross section (5DCS) of double ionization of helium by 5.6 keV electron impact. Symmetric …

The convergent close-coupling (CCC) formalism is employed to calculate the fully resolved
triply differential cross section (TDCS) for helium double photoionization. This is the first ab …

We show that the “two-potential” formalism of conventional distorted-wave rearrangement
theory, which is formally valid only for short-range interactions, can be used to evaluate …