Scaling law for total electron-impact ionization cross sections of Li-like ions

Journal Article · Thu Sep 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.034701· OSTI ID:20718647

Ancarani, L U ^[1]; Hervieux, P -A ^[2]

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1. Laboratoire de Physique Moleculaire et des Collisions, Institut de Physique, Technopole 2000, 57078 Metz (France)
2. Institut de Physique et Chimie des Materiaux de Strasbourg, GONLO, 23 rue du Loess, 67034 Strasbourg (France)

Experimental total cross sections for direct electron-impact ionization of the valence electron of several Li-like ions are seen to follow a new ab initio scaling law which is inspired by a Coulomb-Born model and the frozen-core Hartree-Fock approximation. The predictive character of this scaling law should be very useful to experimentalists and can be used to complete data tables needed for plasma or astrophysical studies. A single-parameter fit of the best available experimental data, once scaled, provides us with a single formula, for moderately charged Li-like ions, which is more accurate than Lotz semiempirical formula.

• OSTI ID: 20718647
• Journal Information: Physical Review. A, Vol. 72, Issue 3; Other Information: DOI: 10.1103/PhysRevA.72.034701; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ELECTRONS
HARTREE-FOCK METHOD
IONIZATION
MULTICHARGED IONS
PLASMA
SCALING LAWS
VALENCE