Excitation-autoionization contributions to the electron-impact ionization of Kr[sup 4+]--Kr[sup 7+]

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.49.4682· OSTI ID:7116643

Gorczyca, T W; Pindzola, M S ^[1]; Badnell, N R ^[2]; Griffin, D C ^[3]

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1. Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
2. Department of Physics and Applied Physics, University of Strathclyde, Glasgow, G4 0NG (United Kingdom)
3. Department of Physics, Rollins College, Winter Park, Florida 32789 (United States)

We report on calculations for the electron-impact ionization of the krypton ions Kr[sup 4+]--Kr[sup 7+]. Results are first obtained from a configuration-average distorted-wave calculation. Multiplet-resolution and channel-coupling effects are investigated using an [ital LS]-coupled nonrelativistic [ital R]-matrix method for the excitation autoionization of Kr[sup 6+] and Kr[sup 7+], and the inclusion of resonance effects is discussed. Term dependence and relaxation effects, which are found to be significant, are incorporated through the use of pseudo-orbitals. These [ital R]-matrix results are found to be in good agreement with [ital LS]-coupled distorted-wave calculations. Final results for the excitation-autoionization contributions for Kr[sup 6+] and Kr[sup 7+] are obtained in a semirelativistic intermediate-coupled distorted-wave approximation, including both term dependence and relaxation effects. Comparison to experiment is made where available.

• DOE Contract Number: AC05-84OR21400; FG05-86ER53217
• OSTI ID: 7116643
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 49:6; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
CHARGED PARTICLES
COLLISIONS
COUPLING
CROSS SECTIONS
DISTORTED WAVE THEORY
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
INTERMEDIATE COUPLING
ION COLLISIONS
ION PAIRS
IONIZATION
IONS
KRYPTON IONS
L-S COUPLING
MATRICES
MULTICHARGED IONS
PLASMA
R MATRIX
RESONANCE