An eleven-state electron-helium scattering calculation
L C G Freitas; K A Berrington; P G Burke; A Hibbert; A E Kingston; A L Sinfailam; L C G Freitas; Dept. of Appl. Maths. & Theoretical Phys., Queen's Univ of Belfast, Belfast, UK; K A Berrington; Dept. of Appl. Maths. & Theoretical Phys., Queen's Univ of Belfast, Belfast, UK; P G Burke; Dept. of Appl. Maths. & Theoretical Phys., Queen's Univ of Belfast, Belfast, UK; A Hibbert; Dept. of Appl. Maths. & Theoretical Phys., Queen's Univ of Belfast, Belfast, UK; A E Kingston; Dept. of Appl. Maths. & Theoretical Phys., Queen's Univ of Belfast, Belfast, UK; A L Sinfailam; Dept. of Appl. Maths. & Theoretical Phys., Queen's Univ of Belfast, Belfast, UK
Журнал:
Journal of Physics B: Atomic and Molecular Physics
Дата:
1984-05-14
Аннотация:
The first results of an eleven-state R-matrix calculation on electron-helium scattering are presented. The resonance structure near the n=3 states of helium is examined and resonance parameters calculated. There is good agreement with recent experimental observations of the 2<sup>3</sup>S and 2<sup>1</sup>S metastable-state excitation cross sections. Earlier five-state calculations are shown to have significantly overestimated these cross sections above 22 eV.
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