Double photoionization of C2+

The double photoionization process takes place when a single photon is absorbed by an atom or an ion followed by the emission of two electrons into the continuum. This process is very important since it reveals the dynamics and the correlations between the emitted electrons. The time-dependent close-coupling method is used to study the single photon double ionization of C2+ in support of possible experiments at FLASH/DESY using an EBIT. Energy and angle differential cross sections are calculated to fully investigate the correlated motion of the two photoelectrons. Single energy differential as well as total cross sections are calculated for different incident photon energies in the range of 125-225 eV. Good agreement is found between our results and available R-matrix results for the double ionization of C2+. The study is also extended to the double photoionization along the Be-like isoelectronic sequence (Be-F5+), where good agreement is found when compared with available theoretical calculations and experimental measurements