We employed electron momentum spectroscopy (EMS) to measure the bulk electronic structure of calcium oxide. We extracted the electron momentum density (EMD), density of occupied states (DOS), band… (More)

Electron momentum spectroscopy (EMS) measures the spectral function of electrons in matter directly, provided that multiple scattering effects are negligibly small. Even for the thinnest films this… (More)

We use the non-relativistic random phase approximation with exchange to perform calculations of valence shell photoionization of Ne, Ar, Kr and Xe from their respective thresholds to photon energy of… (More)

Sebastian Heuser,1 Álvaro Jiménez Galán,2 Claudio Cirelli,1,* Carlos Marante,2 Mazyar Sabbar,1 Robert Boge,1 Matteo Lucchini,1 Lukas Gallmann,1,3 Igor Ivanov,4,5 Anatoli S. Kheifets,4 J. Marcus… (More)

We report photoelectron energy spectra, momentum, and angular distr ibut ons for the strong-field single ionization of lithium by 30 femtosecond laser pulses. For peak intensities betwee n 10 and10… (More)

The spectral functionA(q,v) of silicon has been measured along a number of symmetry directions using high-energy high-resolution electron momentum spectroscopy. It is compared with first-principles… (More)

We study time delay in atomic photoionization by circularly polarized light. By considering the Li atom in an excited 2p state, we demonstrate a strong time delay asymmetry between the photoemission… (More)

Following absorption of a single photon, angles of simultaneous emission of two electrons from a He n S atom become more correlated with increasing n. We find that the strength of this correlation is… (More)

We study transverse electron momentum distribution in strong field atomic ionization driven by laser pulses with varying ellipticity. We show, both experimentally and theoretically, that the… (More)

We report the total integrated cross-section (TICS) of two-photon double ionization of helium in the photon energy range from 42 to 50 eV. Our computational procedure relies on a numerical solution… (More)