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Berlin 2001 – scientific programme

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A: Atomphysik

A 6: Spectroscopy

A 6.9: Talk

Tuesday, April 3, 2001, 17:45–18:00, H1028

Hyperfine Structure Investigation of Singly Ionized Praseodymium — •E. Stachowska 1, J. Ruczkowski 1, J. Dembczyński1, and G.H. Guthöhrlein21Chair of Atomic Physics, Poznań University of Technology, Piotrowo 3, PL-60-965 Poznań, Poland — 2Universität der Bundeswehr Hamburg, Laboratorium für Experimentalphysik, Holstenhofweg 85, D-22043 Hamburg, Germany

Fine(fs)- and hyperfine structure (hfs) analysis using semi-empirical methods may be much more successful than ab inito theoretical calculations if experimental data are available to a sufficient amount. The results of the hfs analysis are a good test for the quality of the wavefunctions and for the identification of the levels at every step of the process of optimization of the fs parameters; they also provide useful predictions of fs and hfs properties in various configurations of an element. Application of laser spectroscopic methods in the hfs measurements of Pr II [1] creates possibilities of a significant progress in the investigation. In this work the hfs analysis of all the experimental data available until now has been performed in a basis expanded over 4 configurations; ( 4f36s +4f35d+4f25d6p+4f2 6s6p) . That allowed us to determine the values of hfs radial parameters of the above configurations for the first time and to predict hfs splittings of the remaining levels of the system, which have not been observed until now. The results obtained herein will be useful for further systematic investigation of the atomic structure of praseodymium.
Maosheng Li, et al., Phys. Rev. A 62, 05 2504 (2000)
This work was partially supported by KBN 2P03B 116 14

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