Distorted-wave cross sections for electron-impact ionization of Ar{sup 7+}

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.2967· OSTI ID:385678

Reed, K J; Chen, M H ^[1]

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1. Atomic Processes Group, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

Distorted-wave methods have been used to calculate cross sections for electron-impact ionization of sodiumlike Ar{sup 7+} for collision energies ranging from near threshold to 1 keV. We included contributions due to excitation-autoionization and resonant excitation{endash}double autoionization (REDA), as well as the contributions from direct ionization of the 3{ital s} electron and the {ital n}=2 inner-shell electrons. We find that the effects of radiative damping and loss channels reduce the REDA contributions by a factor of 4. We compare our calculated results to experimental results and to theoretical cross sections obtained in a close-coupling approximation. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 385678
• Journal Information: Physical Review A, Vol. 54, Issue 4; Other Information: PBD: Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON IONS
ELECTRON-ION COLLISIONS
IONIZATION
CROSS SECTIONS
DISTORTED WAVE THEORY
EXCITATION
EV RANGE 100-1000
S STATES
AUTOIONIZATION