Angular distribution of electrons from an H2 molecule (violet) doubly ionized by a single photon, when one electron (red) is ejected perpendicular to the photon polarization (green). The cross section depends strongly on the internuclear distance.
From the article:
Role of Nuclear Motion in Double Ionization of Molecular Hydrogen by a Single PhotonD. A. Horner, W. Vanroose, T. N. Rescigno, F. Martín, and C. W. McCurdy
Phys. Rev. Lett. 98, 073001 (2007)
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