Earlier ab initio calculations for electron scattering by HCl are analysed to obtain the behaviour of the S-matrix poles as the internuclear distance is varied. It is shown that the pole which corresponds to a bound state at large internuclear distances does not evolve into a resonance as the distance is decreased but moves on to a lower Riemann sheet where it will have no observable effect on scattering cross sections. The resonance which was observed near 3 eV is shown to correspond to a different, unrelated pole.
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - 01 Dec 1990|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics