Volume 70, Number 2, April 2005
|Page(s)||183 - 189|
|Section||Atomic and molecular physics|
|Published online||16 March 2005|
Decay rates of planar helium
Max-Planck-Institut für Physik komplexer Systeme Nöthnitzer Str. 38, D-01187 Dresden, Germany
2 Institut für Theoretische Physik, Universität Regensburg D-03040 Regensburg, Germany
3 Laboratoire Kastler Brossel - 4 place Jussieu F-75252 Paris Cedex 05, France
4 Université d'Evry Val d'Essonne - Bd F. Mitterrand F-91025 Evry Cedex, France
Accepted: 15 February 2005
We compare the autoionization rates of characteristic configurations of the doubly excited helium atom, in one, two and three dimensions. We find that the decay rates of the two-dimensional restriction are in quantitative agreement with those of the real physical system, whilst the one-dimensional model can underestimate the actual decay rates by orders of magnitude.
PACS: 31.25.Jf – Electron correlation calculations for atoms and ions: excited states / 05.45.Mt – Quantum chaos; semiclassical methods / 31.15.Ar – Ab initio calculations
© EDP Sciences, 2005
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