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Kinematically complete experiments for positron-impact ionization of helium atoms at the NEPOMUC facility

Pflüger, T; Holzwarth, M; Senftleben, A; Ren, X; Dorn, Alexander R; Ullrich, Joachim; Hargreaves, L.R.; Lohmann, Birgit; Slaughter, Daniel; Sullivan, James; Lower, Julian; Buckman, Stephen

Description

Positron impact ionization of helium is studied with fully resolved momentum vectors of all continuum particles. An imaging multi-particle momentum spectrometer (reaction microscope) detecting all final state particles over the full solid angle was applied. This apparatus was connected to the NEPOMUC facility delivering intense positron beams tuneable over a large energy range with good beam quality. At 80 eV impact energy about 5000 triple coincidence events were collected. Cross sections as...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Conference paper
URI: http://hdl.handle.net/1885/26106
Source: Journal of Physics: Conference Series
DOI: 10.1088/1742-6596/262/1/012047
Access Rights: Open Access

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