Probing electron-electron correlation with attosecond pulses
Probing electron-electron correlation with attosecond pulses is a scholarly work, published in 2003 in ''European Physical Journal D''. The main subjects of the publication include mass spectrometry, attosecond, photoionization, ground state, atomic physics, physics, electron, photon, laser, Electronic correlation, ionization, helium, Double ionization, attophysics, and density functional theory. The authors demonstrate that when helium is exposed to subfemtosecond or attosecond pulses, both peaks move and their displacement is a signature of the time needed by the He+ orbital to relax after the ejection of the first electron.