Abstract
In this paper, we compare triple differential cross sections for double photoionization of the helium isoelectronic sequence (H− ion, He atom and Li+ ion) at low impact energy with Ei/E0 = 1.076 au, Ei and E0 being, respectively, the incident photon energy and the double photoionization threshold. We restrict to equal energy sharing kinematics but consider both coplanar and non-coplanar geometries. Results show marked differences in the shapes of the double photoionization cross sections in the three cases.
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More From: Journal of Physics B: Atomic, Molecular and Optical Physics
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