Electron-impact ionization of Se super(3+)

Absolute electron-impact single and multiple ionization cross-section measurements for Se super(3+) ions were performed using the dynamic-crossed-beams technique over the energy range from the ionization threshold to 1 keV. The experimental single ionization cross section for Se super(3+) shows evid...

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Published inJournal of physics. B, Atomic, molecular, and optical physics Vol. 47; no. 10; pp. 1 - 7
Main Authors Alna'washi, G A, Barai, K K, Aryal, N B, Thomas, C M, Phaneuf, R A
Format Journal Article
LanguageEnglish
Published 28.05.2014
Subjects
Autoionization
Cross sections
Cross sections (physics)
Energy use
Excitation
Ionization
Ionization cross sections
Thresholds
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Summary:Absolute electron-impact single and multiple ionization cross-section measurements for Se super(3+) ions were performed using the dynamic-crossed-beams technique over the energy range from the ionization threshold to 1 keV. The experimental single ionization cross section for Se super(3+) shows evidence of significant contributions of 4s-nl (n [> or =, slanted] 6) and 3d-nl (n [? or =, slanted] 4) inner-shell excitation-autoionization. The cross sections for double and triple ionization are dominated by ionization-autoionization and ionization-double autoionization of a 3p or 3s electron, respectively. The measurements were compared with the direct ionization cross sections predicted by the Lotz semi-empirical formula for direct ionization. The maximum values of cross sections for single, double and triple ionization are compared.
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ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075147/10/105201