Convergent calculations of double ionization of helium: from ($\gamma$,2e) to (e,3e) processes

A. S. Kheifets, Igor Bray

The first absolute (e,3e) measurements, by Lahmam-Bennani et al [Phys. Rev. A {\bf 59}, 3548 (1999)], have been recently approximately reproduced by Berakdar [Phys. Rev. Lett. {\bf…