title: Differential electron emission for single and multiple ionization of argon by 500 eV positrons.
abstract: 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 degrees and electrons with emission energies less than 10 eV that are observed between 45 and 135 degrees 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.
authors.affiliation: Department of Physics, University of Missouri-Rolla, Rolla, Missouri 65409, USA.
authors.forename: O G
authors.initials: OG
authors.lastname: de Lucio
authors.forename: J
authors.initials: J
authors.lastname: Gavin
authors.forename: R D
authors.initials: RD
authors.lastname: DuBois