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article · Molecular Physics

Theoretical investigation of Rydberg states of He <sub>2</sub> using the R-matrix method

20231 citationOpen accessUniversity of Douala

Abstract

Bound states of the He2 molecule are determined from an electron-He2+ collision calculation using the R-matrix method. The calculations are performed at a moderately dense grid of 35 internuclear separations are used to characterise He2 Rydberg states with n≤7. Potential energy curves for singlet 1Σg+, 1Σu+, 1Πg, 1Πu and 1Δu and triplet 3Σg+, 3Σu+, 3Πg, 3Πu and 3Δu Rydberg states of He2 as well as effective quantum numbers as a function of internuclear separation are calculated. Based on the potential energy curves of A1Σg+, B 1Πg, C 1Σu+, F 1Πu and a 3Σu+, b 3Πg, c 3Σg+, f 3Πu, spectroscopic parameters (Te, De,Re,ωe,ωexe,αe and Be) of these states have been determined and compared with theoretical and experimental data available.

Research topics

  • Advanced Chemical Physics Studies
  • Atomic and Molecular Physics
  • Cold Atom Physics and Bose-Einstein Condensates

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DOI: 10.1080/00268976.2023.2295013

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