Crossed-second-order-effects of the isotope shift and hyperfine-structure parameters in the Eu I configuration 4f7 6s6d

  • H. -D. Kronfeldt
  • P. Seifert
Article
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Revised:

Abstract

In the Eu I configuration 4f7 6s6d the isotope shift (IS) and hyperfine-structure (hfs) of the termse6D ande10D were determined from fourteen transitions (4f7 6s6d-4f7 6s6p) with computer supported interference spectroscopy.

From the IS of altogether nine levels of 4f7 6s6d the crossed-second-order-parameterg3(4f,6s)=−0.90(6)mK was evaluated. The ratiog3/G3=−4.4(3)·10−6 (G3: Slater Integral of the fine structure) is of the same size as that from five other independent investigations and one theoretical value.

The single electron hfs splitting constantsa 4f 10 =−1.9(3)mK,a 6s 10 =391(3)mK, anda 6d 12 =0.9(3)mK were also evaluated and are compared with those of other Eu 4f7 6snl configurations.

PACS

32.20.f 35.10 
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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • H. -D. Kronfeldt
    • 1
  • P. Seifert
    • 1
  1. 1.Optisches Institut der Technischen Universität BerlinBerlin 12Germany

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