Abstract The COLTRIMS Reaction Microscope C‐REMI can image the momentum vectors of
all emitted charged fragments in an atomic or molecular reactions similar to the bubble …

In this review, we will focus on recent progress on the investigations of nondipole effects in
few-electron atoms and molecules interacting with light fields. We first briefly survey several …

Interaction of a strong laser pulse with matter transfers not only energy but also linear
momentum of the photons. Recent experimental advances have made it possible to detect …

Strong-field ionization of atoms by circularly polarized femtosecond laser pulses produces a
donut-shaped electron momentum distribution. Within the dipole approximation this …

We experimentally investigate the effects of the linear photon momentum on the momentum
distributions of photoions and photoelectrons generated in one-photon ionization in an …

Amusia and Kheifets in 1984 introduced a Green's function formalism to describe the effect
of many-electron correlation on the ionization spectra of atoms. Here, we exploit this …

In electron-electron interactions in electromagnetic systems, retardation in the exchange of a
virtual photon is essentially important as the first-order quantum electrodynamics correction …

We theoretically and experimentally investigate the photon momentum transfer in single-
photon double ionization of helium at various large photon energies. We find that the …

We investigate experimentally and theoretically the C and O 1 s photoionization of fixed-in-
space CO molecules at a photon energy of 905 eV. We find a significant dependence of the …

We experimentally study the influence of the binding energy on nondipole effects in K-shell
single-photon ionization of atoms at high photon energies. We find that for each ionization …