Excitation-autoionization in highly charged sodiumlike ions
- High Temperature Physics Division, Lawrence Livermore National Laboratory, Livermore, California (USA)
- Department of Physics and Astronomy, University College London, Gower Street, London, WCIE6BT (England)
The effects of excitation-autoionization have been studied for nine sodiumlike ions with 26{le}{ital Z}{le}92. Relativistic-distorted-wave methods were used to calculate cross sections for direct electron-impact ionization of these ions. Relativistic-distorted-wave cross sections were computed for electron-impact excitation of {ital n}=2 electrons to {ital n}=3 levels of the ions, and detailed relativistic Auger rates and radiative rates were calculated in order to obtain the excitation-autoionization cross sections. We investigated the variation of these cross sections along the Na-like isoelectronic sequence. We found that configuration interaction significantly affects some cross sections in ions where level crossings occur for some of the doubly excited intermediate states.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5102063
- Journal Information:
- Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 44:7; ISSN 1050-2947; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AUGER EFFECT
AUTOIONIZATION
BRANCHING RATIO
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DECAY
DISTORTED WAVE THEORY
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
ION COLLISIONS
IONIZATION
IONS
PARTIAL WAVES
PARTICLE DECAY
RADIATIVE DECAY
SODIUM IONS