Electron-impact ionization in the magnesium-isoelectronic sequence

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.33.3787· OSTI ID:5732235

Pindzola, M S; Griffin, D C; Bottcher, C

Excitation-autoionization contributions to the electron-impact ionization of the Mg-like ions S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/ are calculated in the distorted-wave approximation. The calculations indicate that the largest contributions are due to the 2p..-->..3p monopole and 2p..-->..3d dipole excitations from either the 2p/sup 6/3s/sup 2/ ground-state configuration or the 2p/sup 6/3s3p excited-state configuration. Excellent agreement with the experimental crossed-beam measurements of Howald et al. is obtained when one assumes that a substantial fraction of the ions coming from the electron cyclotron resonance ion source are in metastable states of the 2p/sup 6/3s3p excited-state configuration.

• Research Organization: Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5732235
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 33:6; 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
ATOMS
AUTOIONIZATION
CHARGED PARTICLES
CHLORINE IONS
COLLISIONS
CROSS SECTIONS
DISTORTED WAVE THEORY
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ION COLLISIONS
IONIZATION
IONS
ISOELECTRONIC ATOMS
MULTICHARGED IONS
SULFUR IONS
TOTAL CROSS SECTIONS