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Angular anisotropy parameters and recoil-ion momentum distribution in two-photon double ionization of helium

Kheifets, Anatoli; Ivanov, Igor; Bray, Igor


We present convergent-close-coupling (CCC) calculations of the angular anisotropy parameters β2,β4 and the recoil ion momentum distribution dσ∕dp in two-photon double ionization (TPDI) of helium. In a stark contrast to single-photon double ionization (SPDI), where the β2 parameter varies widely changing the angular distribution from isotropic to nearly dipole for slow and fast photoelectrons, respectively, the β parameters for TPDI show very little change. The angular distribution of the recoil...[Show more]

CollectionsANU Research Publications
Date published: 2007-08-28
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.76.025402


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