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Large-dimension configuration-interaction calculations of positron binding to the group-II atoms

Bromley, Michael W. J. and Mitroy, Jim (2006). Large-dimension configuration-interaction calculations of positron binding to the group-II atoms. Physical Review A (Atomic, Molecular and Optical Physics),73(3):032507-1-032507-7.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 17 times in Scopus Article | Citations

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IRMA ID 80791673xPUB60
Title Large-dimension configuration-interaction calculations of positron binding to the group-II atoms
Author Bromley, Michael W. J.
Mitroy, Jim
Journal Name Physical Review A (Atomic, Molecular and Optical Physics)
Publication Date 2006
Volume Number 73
Issue Number 3
ISSN 1094-1622   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33644915351
Start Page 032507-1
End Page 032507-7
Total Pages 7
Place of Publication College Park, United States
Publisher American Physical Society
Field of Research 0202 - Atomic, Molecular, Nuclear, Particle and Plasma Physics
0204 - Condensed Matter Physics
0205 - Optical Physics
HERDC Category C1 - Journal Article (DEST)
Abstract The configuration-interaction (CI) method is applied to the calculation of the structures of a number of positron binding systems, including e(+)Be, e(+)Mg, e(+)Ca, and e(+)Sr. These calculations were carried out in orbital spaces containing about 200 electron and 200 positron orbitals up to l=12. Despite the very large dimensions, the binding energy and annihilation rate converge slowly with l, and the final values do contain an appreciable correction obtained by extrapolating the calculation to the l ->infinity limit. The binding energies were 0.00317 hartree for e(+)Be, 0.0170 hartree for e(+)Mg, 0.0189 hartree for e(+)Ca, and 0.0131 hartree for e(+)Sr.
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Additional Notes Copyright by the American Physical Society

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