Convergent close-coupling calculations of two-photon double ionization of helium
Atomic Physics
2026-03-03 v1
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 {\em et al} [J. Phys. {\bf B38}, L35 (2005)]
Keywords
Cite
@article{arxiv.physics/0601137,
title = {Convergent close-coupling calculations of two-photon double ionization of helium},
author = {A. S. Kheifets and I. A. Ivanov},
journal= {arXiv preprint arXiv:physics/0601137},
year = {2026}
}
Comments
15 pages, 6 figures