EGAS41 - Swansea University

41 st EGAS CP 2 Gdańsk 2009
Progress in the analysis of the odd parity configurations of
tantalum atom
B. Arcimowicz ∗ , J. Dembczyński
Chair of Quantum Engineering and Metrology, Poznań University of Technology Nieszawska
13B, PL 60-965 Poznań, Poland
∗ Corresponding author: bronislaw.arcimowicz@put.poznan.pl
Classification of electronic levels belonging to odd parity configurations system in tantalum
atom, based on semiempirical calculations (described in [1]) was extended to further
newly discovered levels. Calculations of A and B hyperfine structure constants, performed
also for new levels, did not yield satisfactory agreement with experimental values obtained
with laser spectroscopic methods by experimental group in Graz. Calculations performed
with additional inclusion of some interactions in second order of perturbation theory did
not result in a substantial decrease of these discrepancies.
Within the frame of a new theoretical approach to the description of hyperfine structure,
recently developed in Poznań, new calculations concerning parametrization of configurations
interaction were undertaken. These include the following kinds of excitations:
open shell - empty shell and closed shell - open shell. Results of calculations obtained, as
well as hyperfine structure analysis and classification of the levels belonging to odd parity
configurations in tantalum atom, are discussed in detail within this work.
Acknowledgment
This work was supported by Polish Ministry of Science and Higher Education under the project
N519 033 32/4065.
References
[1] B. Arcimowicz, J. Dembczyński EGAS Conference Graz (2008)
[2] N. Jaritz, L. Windholz, U. Zaheer, M. Farooq, B. Arcimowicz, R. Engleman Jr, J.C.
Pickering, H. Jäger, G.H. Guthöhrlein, Phys. Scr. 74, 211, (2006)
[3] P. G̷lowacki private communication
62