Low energy electron collisions with He2 + molecules

B. M. McLaughlin*, C. J. Gillan, P. G. Burke, J. S. Dahler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The R-matrix method is used in an ab initio study of low energy elastic scattering by He2 + molecular ions. SCF and correlated CI wavefunctions have been used in a two state approximation, which retains the lowest two states, 2u + and 2g +, of the He2 + molecular ion in the scattering basis. Cross section calculations have been performed at two fixed internuclear separations, 1.8 and 2.0625 a0. At the equilibrium bond separation we have detected and fitted the lowest lying npσ 3Σu + resonances in the 3Σ+ u scattering symmetry. In addition, bound state calculations have also been carried out for the He2 (1σg +u2s a3Σu +) state at these two internuclear separations and are seen to compare favorably with MCSCF and SOCI results.

Original languageEnglish
Pages (from-to)518-530
Number of pages13
JournalNuclear Inst. and Methods in Physics Research, B
Issue number4
Publication statusPublished - 03 Apr 1991

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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