Frankfurt 2006 – wissenschaftliches Programm
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A: Atomphysik
A 8: Poster I: Pr
äzisionsspektroskopie
A 8.6: Poster
Dienstag, 14. März 2006, 16:30–18:30, Labsaal
Fine- and hyperfine structure analysis of the odd configuration system tantalum atom — •Bronislaw Arcimowicz1, Jerzy Dembczynski1, and Laurentius Windholz2 — 1Chair of Atomic Physics, Poznan University of Technology, Nieszawska 13, PL-60-965 Poznan, Poland — 2Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
For the atomic and ionic tantalum, above 5000 spectral lines are observed. But, the classification of these lines is still incomplete. The previous attempts of the fine- and hyperfine structure analysis for the odd configurations of tantalum atom were unsatisfactory.
The new experimental results of the fine- and hyperfine structure investigations of L.Windholz and co-workers stimulated us to perform parametric reanalysis in the extended basis of 27 configurations :
5d4n’f (n’=5-7) + 5d4n"p (n"=6-10) + 5d36sn’f (n’=5-7) + 5d36sn"p (n"=6-10) + 5d36p7s + 5d36p6d + 5d25f6s2 + 5d26s2n"p (n"=6-10) + 5d26s27p + 5d26s6p7s + 5d26s6p6d + 5d26p3.
Magnetic-dipole hyperfine interaction constants A were calculated using the fine structure eigenvectors and adjusting radial integrals in a least-squares procedure which compare the calculated A constants with the experimental values. Moreover, the values of energy for the levels up to now unidentified and hyperfine structure A constants were predicted.