Triply differential electron emission cross sections are measured for single ionization of argon by 500 eV positrons. Data are presented for coincidences between projectiles scattered into angles of 3° and electrons with emission energies less than 10 eV that are observed between 45 and 135° along the beam direction. For interpretation, these are compared to cosine squared representations of the binary and recoil lobes which are convoluted over experimental parameters. Singly differential electron emission data for double and triple ionization by positrons are also presented.
J. M. Gavin et al., "Differential Electron Emission for Single and Multiple Ionization of Argon by 500 EV Positrons," Physical Review Letters, American Physical Society (APS), Dec 2006.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.97.243201
National Science Foundation (U.S.)
Keywords and Phrases
Argon; Electron Beams; Electron Emission; Electron Energy Levels; Emission Energies; Ionization
Article - Journal
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