Electronic Structure of the Helium Molecular Anion He-2
Abstract
The recently discovered He-2 ion is examined by means of configuration-interaction wave functions constructed from an extended Slater-type-orbitals basis. We find that the 4Πg state of He-2 is bound relative to the a2Σ+u state of He2. The calculated electron affinity is 0.233 eV compared to 0.077 eV for the He-[4P∘] ion. This anion decays through the long-lived 52g component with τ~350 μsec and the much shorter-lived 32g, ½g components with τ~10 μsec.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 1984
- DOI:
- 10.1103/PhysRevLett.52.1413
- Bibcode:
- 1984PhRvL..52.1413M
- Keywords:
-
- Atomic Structure;
- Configuration Interaction;
- Helium;
- Molecular Ions;
- Negative Ions;
- Affinity;
- Molecular Spectra;
- Slater Orbitals;
- Wave Functions;
- Atomic and Molecular Physics;
- 31.20.Di;
- 31.50.+w;
- 31.70.Fn