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Theoretical evaluation of the 7,9Be- 2s2p2 4P 1/2,3/2,5/2 hyperfine structure parameters and Be 2s2p 3Po electron affinity
Laboratoire d'Electronique Quantique, USTHB, BP 32, El-Alia, 16111 Bab-Ezzouar, Alger, Algeria.
Malmö högskola, School of Technology (TS). Department of Physics, Lund University, S-22100 Lund, Sweden.ORCID iD: 0000-0001-6818-9637
Laboratoire Aimé Cotton, CNRS II bâtiment 505, F-91405 Orsay Cedex, France.
Laboratoire de Chimie Physique Moléculaire, CP160/09, Université Libre de Bruxelles, 50 avenue F Roosevelt, B-1050 Bruxelles, Belgium.
2003 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 36, no 11, p. 2189-2201Article in journal (Refereed) Published
Abstract [en]

The hyperfine structures of 7,9Be  2s2p2  4P 1/2,3/2,5/2 are investigated theoretically using the multiconfiguration Hartree–Fock and configuration interaction methods. The effects of the hyperfine mixing between the fine-structure J-levels are discussed. The feasibility of some atomic spectroscopy experiments, allowing determination of the 7Be quadrupole moment from the observed hyperfine structure of the 7Be negative ion and from the present electronic parameters, is investigated. The Be 2s2p 3Po electron affinity is monitored as a function of the orbital and configuration spaces to assess the reliability of the wavefunctions of the neutral atom and the negative ion. The theoretical value nicely converges towards the most recent theoretical and experimental results.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2003. Vol. 36, no 11, p. 2189-2201
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Atom and Molecular Physics and Optics
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URN: urn:nbn:se:mau:diva-16025DOI: 10.1088/0953-4075/36/11/305ISI: 000184057200009Scopus ID: 2-s2.0-0038209734Local ID: 538OAI: oai:DiVA.org:mau-16025DiVA, id: diva2:1419547
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2024-06-11Bibliographically approved

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