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Radiative lifetime measurements and transition probability calculations in lanthanide ions

In English

Författare

Summary, in English

We have undertaken a systematic investigation of spectroscopic properties of lanthanide ions (Z=57-71). Using time-resolved laser-induced fluorescence following one- or two-photon excitations, a large number of radiative lifetimes have been measured at the Lund Laser Centre for singly, doubly and trebly ionized atoms. These new measurements have been used for testing theoretical calculations performed within the framework of a relativistic Hartree-Fock approach taking core-polarization effects into account. Using the experimental lifetimes (when available) and the theoretical branching fractions, a large number of transition probabilities, most of them of astrophysical interest, have been deduced and are stored in a new database (DREAM). Up to now, the results obtained concern the following ions: La2+, Ce2+, Ce2+, Pr2+, Ho2+, Er2+, Tm2+, Tm2+, Yb2+, Yb2+, Yb2+, Lu2+ and Lu2+. (C) 2002 Elsevier Science B.V. All rights reserved.

Publiceringsår

2002

Språk

Engelska

Sidor

255-259

Publikation/Tidskrift/Serie

Journal of Alloys and Compounds

Volym

344

Issue

1-2

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Atom and Molecular Physics and Optics

Nyckelord

  • lanthanide ions
  • radiative lifetime measurements
  • transition probability

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0925-8388