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Hyperfine Interaction of 140Ce(←140La) in CaB6

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Abstract

A 140La(I π=3−, T 1/2=40.3 h)-doped layer has been produced in CaB6 by means of radioactive isotope (RI) beam technique: 140Cs(I π=1−, T 1/2=63.7 s) was implanted into CaB6 and the radioactive equilibrium of 140Ba–140La was achieved. The concentration of La in CaB6 was La/Ca ∼0.001. Obtained TDPAC spectra of the 2083 keV level of 140Ce (I π=4+, T 1/2=3.4 ns, μ=+4.35±0.10 μ N ) followed by the β decay of 140La showed the existence of hyperfine magnetic fields: B hyp=−15.0±0.5 T and −1.00±0.15 T.

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Authors and Affiliations

  1. Research Reactor Institute, Kyoto University, Kumatori, Osaka, 590-0494, Japan

    M. Tanigaki, Y. Ohkubo, A. Taniguchi & Y. Kawase

  2. Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan

    J. Goto & T. Sasanuma

Authors
  1. M. Tanigaki
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  2. Y. Ohkubo
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  3. A. Taniguchi
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  4. Y. Kawase
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  5. J. Goto
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  6. T. Sasanuma
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Tanigaki, M., Ohkubo, Y., Taniguchi, A. et al. Hyperfine Interaction of 140Ce(←140La) in CaB6 . Hyperfine Interactions 136, 391–396 (2001). https://doi.org/10.1023/A:1020598028120

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  • DOI: https://doi.org/10.1023/A:1020598028120

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