title: Laser-pump/X-ray-probe experiments with electrons ejected from a Cu(111) target: space-charge acceleration.
abstract: A comprehensive investigation of the emission characteristics for electrons induced by X-rays of a few hundred eV at grazing-incidence angles on an atomically clean Cu(111) sample during laser excitation is presented. Electron energy spectra due to intense infrared laser irradiation are investigated at the BESSY II slicing facility. Furthermore, the influence of the corresponding high degree of target excitation (high peak current of photoemission) on the properties of Auger and photoelectrons liberated by a probe X-ray beam is investigated in time-resolved pump and probe measurements. Strong electron energy shifts have been found and assigned to space-charge acceleration. The variation of the shift with laser power and electron energy is investigated and discussed on the basis of experimental as well as new theoretical results.
authors: Institut Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung (FG-ISRR), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors: G
authors: G
authors: Schiwietz
authors: Institut Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung (FG-ISRR), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors: D
authors: D
authors: Kühn
authors: Institut Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung (FG-ISRR), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors: A
authors: A
authors: Föhlisch
authors: Institut Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung (FG-ISRR), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors: K
authors: K
authors: Holldack
authors: Institut Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung (FG-ISRR), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors: T
authors: T
authors: Kachel
authors: Institut Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung (FG-ISRR), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors: N
authors: N
authors: Pontius
keywords: Auger electrons; photoelectrons; picosecond-pump–probe experiments; time-resolved NEXAFS; time-resolved XPS