Triply excited three-electron systems-semiclassical model
Institute of Physics, P.O. Box 57, 11000 Belgrade, Yugoslavia
Faculty of Physics, P.O. Box 550, 11000 Belgrade, Yugoslavia
Revised: 16 March 1999
Published online: 15 July 1999
We calculate rovibronic intrashell spectra of the triply highly excited atomic hydrogen dianion, helium anion and lithium atom, within a simple semiclassical model. Zero-order electronic energy levels and half-lives are calculated for a number of principal quantum numbers and approximate thresholds for the appearance of vibronic modes are estimated. Since no quantum-mechanical and experimental data are available for the highly excited levels (N > 5), where the semiclassical models apply, no comparison with other results are possible at present. The problem of comparing semiclassical and quantum-mechanical calculations for moderately large quantum numbers, which seem attainable by the present day experimental technique, has been discussed.
PACS: 31.50.+w – Excited states / 31.25.Jf – Electron-correlation calculations for atoms and ions: excited states
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999