Energy sharing in the two-electron attosecond streak camera

Abstract

Using the recently developed concept of the two-electron streak camera (see Emmanouilidou et al 2010 New J. Phys.12 103024), we studied the energy sharing between the two ionizing electrons in single-photon double ionization of He(1s2s). We found that the most symmetric and asymmetric energy sharings correspond to different ionization dynamics with the ion's Coulomb potential significantly influencing the latter. This different dynamics for the two extreme energy sharings gives rise to different patterns in asymptotic observables and different time delays between the emission of the two electrons. We show that the two-electron streak camera resolves the time delays between the emission of the two electrons for different energy sharings.