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Title: Electron-impact ionization of Mg-like ions: S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/

Abstract

Absolute electron-impact ionization cross sections were measured as a function of collision energy for ions in the Mg-isoelectronic sequence S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/. The measurements cover the energy range from threshold to 1500 eV and show onsets due to the indirect ionization process of inner-shell excitation followed by autoionization. The relative magnitude of the indirect ionization process increases dramatically in comparison with the direct process along the sequence, a feature which is also emphasized by earlier data for Al/sup +/.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
OSTI Identifier:
5611488
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Journal Article
Journal Name:
Phys. Rev. A; (United States)
Additional Journal Information:
Journal Volume: 33:6
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON IONS; ELECTRON-ION COLLISIONS; CHLORINE IONS; SULFUR IONS; CROSS SECTIONS; AUTOIONIZATION; COLLIDING BEAMS; EXCITATION; IONIZATION; MULTICHARGED IONS; BEAMS; CHARGED PARTICLES; COLLISIONS; ELECTRON COLLISIONS; ENERGY-LEVEL TRANSITIONS; ION COLLISIONS; IONS; 640304* - Atomic, Molecular & Chemical Physics- Collision Phenomena

Citation Formats

Howald, A M, Gregory, D C, Meyer, F W, Phaneuf, R A, Mueller, A, Djuric, N, and Dunn, G H. Electron-impact ionization of Mg-like ions: S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/. United States: N. p., 1986. Web. doi:10.1103/PhysRevA.33.3779.
Howald, A M, Gregory, D C, Meyer, F W, Phaneuf, R A, Mueller, A, Djuric, N, & Dunn, G H. Electron-impact ionization of Mg-like ions: S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/. United States. doi:10.1103/PhysRevA.33.3779.
Howald, A M, Gregory, D C, Meyer, F W, Phaneuf, R A, Mueller, A, Djuric, N, and Dunn, G H. Sun . "Electron-impact ionization of Mg-like ions: S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/". United States. doi:10.1103/PhysRevA.33.3779.
@article{osti_5611488,
title = {Electron-impact ionization of Mg-like ions: S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/},
author = {Howald, A M and Gregory, D C and Meyer, F W and Phaneuf, R A and Mueller, A and Djuric, N and Dunn, G H},
abstractNote = {Absolute electron-impact ionization cross sections were measured as a function of collision energy for ions in the Mg-isoelectronic sequence S/sup 4 +/, Cl/sup 5 +/, and Ar/sup 6 +/. The measurements cover the energy range from threshold to 1500 eV and show onsets due to the indirect ionization process of inner-shell excitation followed by autoionization. The relative magnitude of the indirect ionization process increases dramatically in comparison with the direct process along the sequence, a feature which is also emphasized by earlier data for Al/sup +/.},
doi = {10.1103/PhysRevA.33.3779},
journal = {Phys. Rev. A; (United States)},
number = ,
volume = 33:6,
place = {United States},
year = {1986},
month = {6}
}