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Relativistic energy shifts of negative-ion bound states: the rational function Thomas-Fermi potential model
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0003-0149-341X
2012 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 85, no 6, 065009- p.Article in journal (Refereed) Published
Abstract [en]

The rational function Thomas-Fermi (RTF) potential recently used for describing electron-atom scattering interactions is investigated as to its bound (negative-ion) states. Although the (static) RTF potential may account for some relativistic and many-body corrections, this study focuses on (relativistic) dynamical aspects of the 'extra' electron in the negative-ion bound states. Some exotic states near threshold are shown to exist in the Dirac equations but not in the Schrodinger equation that neglects the spin of the 'extra' electron. Results are presented for the two large atomic charge numbers Z = 54 and Z = 64.

Place, publisher, year, edition, pages
2012. Vol. 85, no 6, 065009- p.
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-99090DOI: 10.1088/0031-8949/85/06/065009ISI: 000305390900009ScopusID: 2-s2.0-84862177236OAI: diva2:541473
QC 20120718Available from: 2012-07-18 Created: 2012-07-13 Last updated: 2012-07-18Bibliographically approved

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