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(e,3e) on helium at low impact energy: the strongly correlated three-electron continuum

Durr, M; Dorn, Alexander; Ullrich, Joachim; Cao, S.P; Czasch, A O; Kheifets, Anatoli; Gotz, J.R; Briggs, J.S

Description

Double ionization of the helium atom by slow electron impact (E0=106  eV) is studied in a kinematically complete experiment. Because of a low excess energy Eexc=27  eV above the double ionization threshold, a strongly correlated three-electron continuum is realized. This is demonstrated by measuring and calculating the fully differential cross sections for equal energy sharing of the final-state electrons. While the electron emission is dominated by a strong Coulomb repulsion, also signatures...[Show more]

CollectionsANU Research Publications
Date published: 2007-05-11
Type: Journal article
URI: http://hdl.handle.net/10440/758
http://digitalcollections.anu.edu.au/handle/10440/758
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.98.193201

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