Electron-impact double ionization of rare-gas ions

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.29.1749· OSTI ID:7051103

Pindzola, M S; Griffin, D C; Bottcher, C; Crandall, D H; Phaneuf, R A; Gregory, D C

Cross sections for the removal of two electrons from rare-gas ions by single collisions with incident electrons have been both measured using crossed beams of ions and electrons, and calculated using Hartree-Fock distorted-wave theory. For initial ions Ar/sup 4 +/, Kr/sup 4 +/, and Xe/sup 4 +/ the measured peak cross sections are 1.4 x 10/sup -18/, 6.5 x 10/sup -18/, and 9.0 x 10/sup -18/ cm/sup 2/, respectively. These measurements confirm and extend the measurements of Mueller and Frodl and of Achenbach et al. Calculations were performed for the charge-state-4+ ions and for Xe/sup +/, Xe/sup 2 +/, and Xe/sup 3 +/. Comparison of experiment and theory indicates that the double ionization of rare-gas ions is dominated by the indirect mechanism of inner-shell single ionization followed by autoionization. The distorted-wave calculations for the 4d ionization cross section of Xe/sup q/+ (q = 1 to 4) ions are strongly influenced by term dependence in the ejected-electron continuum, and by ground-state correlations.

• Research Organization: Atomic Theory Group, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 7051103
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON IONS
AUTOIONIZATION
BEAMS
CHARGED PARTICLES
COLLIDING BEAMS
COLLISIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
HARTREE-FOCK METHOD
INNER-SHELL IONIZATION
ION COLLISIONS
IONIZATION
IONS
KRYPTON IONS
MULTICHARGED IONS
MULTIPLE PRODUCTION
PARTICLE PRODUCTION
XENON IONS