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Precise measurement of the quadrupole moment of β-emitting12B

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Abstract

Hyperfine interactions of12B(I π,T 1/2=21 ms) implanted in the substitutional site of B atoms (stable) in a (single crystal like) BN (hexagonal) was studied by use of a β-NMR detection. For efficient and simple measurements, the conventional β-NMR has been modified as a new nuclear quadrupole resonance technique (NNQR). For the present case with the nuclear spinI=1 the detection efficiency is improved about 30 times compared with the one with the old method. The quadrupole moment of12B was determined precisely as ¦Q(12B; 1+)¦=13.21±0.26 mb.

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Authors and Affiliations

  1. Department of Physics and Laboratory of Nuclear Studies, Osaka University, 1-1 Machikaneyama, Toyonaka, 560, Osaka, Japan

    T. Ohtsubo, Y. Nakayama, T. Izumikawa, S. Takeda, N. Nakamura, H. Tanji & T. Minamisono

  2. Department of Chemistry, Faculty of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, 560, Osaka, Japan

    S. Takeda & N. Nakamura

  3. Denka Research Center, 3-5-1 Asahimachi, 194, Machida, Japan

    H. Tanji

Authors
  1. T. Ohtsubo
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  2. Y. Nakayama
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  3. T. Izumikawa
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  4. S. Takeda
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  5. N. Nakamura
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  6. H. Tanji
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  7. T. Minamisono
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Ohtsubo, T., Nakayama, Y., Izumikawa, T. et al. Precise measurement of the quadrupole moment of β-emitting12B. Hyperfine Interact 88, 25–33 (1994). https://doi.org/10.1007/BF02068699

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  • DOI: https://doi.org/10.1007/BF02068699

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