Abstract
We apply the convergent close-coupling (CCC) formalism to the problem of two-photon double ionization of helium. The electron-photon interaction is treated perturbatively whereas the electron-electron interaction is included in full. The integrated two-photon double ionization cross-section is substantially below non-perturbative literature results. However, the pattern of the angular correlation in the two-electron continuum is remarkably close to the non-perturbative time-dependent close-coupling calculation of Hu et al (2005 J. Phys. B: At. Mol. Opt. Phys. 38 L35).
| Original language | English |
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| Pages (from-to) | 1731-1742 |
| Number of pages | 12 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 39 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 14 Apr 2006 |