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Isotopieverschiebung der Bariumnuklide140Ba,138Ba,136Ba und134Ba in der Ba II-Resonanzlinie 6p 2 P 1/2-6s 2 S 1/2

Isotope shift of the barium nuclides140Ba,138Ba,136Ba, and134Ba in the Ba II-resonance line 6p 2 P 1/2-6s 2 S 1/2

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Zeitschrift für Physik

Abstract

The radioactive barium nuclide140Ba (T 1/2=12.8 d) has been separated chemically from fission products of uranium. The scheme of the carrier-free separation is described. The isotope shift in the barium II resonance line 6p 2 P 1/2-6s 2 S 1/2,λ=4934 Å has been measured by means of a pressure scanned Fabry-Pérot interferometer. The resultΔv(140Ba-138Ba)=−39.3 (3.2)mK has been used together with the remeasured isotope shift values of138Ba,136Ba, and134Ba to calculate the change of the mean square radius of the nuclear charge distributionδ〈r 2〉. The results are compared with data for isotonic nuclides of neighbouring elements.

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Authors and Affiliations

  1. Fachbereich Physik der Philipps-Universität Marburg, Bundesrepublik Deutschland

    W. Fischer,  M. Hartmann & H. Hühnermann

  2. Labor für Isotopentechnik, Kernforschungszentrum Karlsruhe, Bundesrepublik Deutschland

    H. Vogg

  3. I. Fa. Dunlop AG, Postfach 129, D-6450, Hanau, Bundesrepublik Deutschland

    M. Hartmann

Authors
  1. W. Fischer
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  2. M. Hartmann
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  3. H. Hühnermann
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  4. H. Vogg
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Additional information

Teilweise vorgetragen auf der ersten Tagung der European Group of Atomic Spectroscopy, Paris 1969.

Wir danken den Herren Prof. W. Walcher und Dr. W. Becker für hilfreiche Diskussionsbeiträge und Herrn Chem. Ing. Härtel für die experimentelle Durchführung der140Ba-Abtrennung. Die Durchführung der Arbeit wurde durch die Deutsche Forschungsgemeinschaft und durch den Bundesminister für Bildung und Wissenschaft unterstützt.

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Fischer, W., Hartmann, M., Hühnermann, H. et al. Isotopieverschiebung der Bariumnuklide140Ba,138Ba,136Ba und134Ba in der Ba II-Resonanzlinie 6p 2 P 1/2-6s 2 S 1/2 . Z. Physik 267, 209–217 (1974). https://doi.org/10.1007/BF01669222

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  • DOI: https://doi.org/10.1007/BF01669222

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