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Hyperfine interactions of 19O in TiO2 and quadrupole moments of 13,19O

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Abstract

The electric quadrupole interaction of 19O(Iπ=(5/2)+, T1/2=27.0 s) in TiO2 single crystal was studied in detail by means of the β-NQR to determine the electric quadrupole moments Q of short-lived β-emitting nuclei 19O and 13O(Iπ=(3/2)-, T1/2=8.6 ms). Two implantation sites were found for the implanted O nucleus and the quadrupole coupling constants of 19O at these sites were determined. We observed FT-NMR of the enriched stable isotope 17O in TiO2 and obtained the electric field gradient (EFG) at the oxygen substitutional site. With this knowledge, we have determined Q(13O)=11.0 ± 1.3 mb and Q(19O)=3.7 ± 0.4 mb. The present results are compared with the theoretical values calculated by the shell model code, OXBASH and by the Hartree–Fock calculation with the realistic potential.

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Authors and Affiliations

  1. Department of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan

    K. Sato, T. Miyake, A. Morishita, K. Matsuta, T. Minamisono, M. Mihara, M. Fukuda, K. Minamisono, T. Fukao & Y. Matsumoto

  2. Cyclotron and Radio Isotope Center, Tohoku University, Sendai, Miyagi, 980-77, Japan

    M. Tanigaki

  3. Faculty of Engineering, Gunnma University, 1-5-1 Tenjin, Kiriu, 376, Japan

    S. Takeda

  4. Kochi University of Technology, Tosayamada, Kochi, 782, Japan

    Y. Nojiri & S. Momota

  5. Department of Physics, Faculty of Science, Niigata University, Niigata, 950-21, Japan

    T. Ohtsubo

  6. The Energy Research Center, Wakasa Bay, Tsuruga, 914, Fukui, Japan

    S. Fukuda

  7. RIKEN, Wako, Saitama, 351-01, Japan

    K. Yoshida, A. Ozawa, T. Kobayashi & I. Tanihata

  8. Center for Mathematical Sciences, University of Aizu, Aizuwakamatsu, Fukushima, 965, Japan

    H. Sagawa

  9. Faculty of Science, Tokyo Metropolitan University, Hachioji, Tokyo, 192-03, Japan

    H. Kitagawa

  10. Lawrence Berkeley Laboratory, Berkeley, CA, 94720, USA

    Gray F. Krebs, Jose R. Alonso & T. James M. Symons

Authors
  1. K. Sato
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  2. T. Miyake
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  3. A. Morishita
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  4. K. Matsuta
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  5. T. Minamisono
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  6. M. Tanigaki
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  7. S. Takeda
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  8. M. Mihara
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  9. M. Fukuda
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  10. Y. Nojiri
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  11. K. Minamisono
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  12. T. Fukao
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  13. Y. Matsumoto
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  14. T. Ohtsubo
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  15. S. Fukuda
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  16. S. Momota
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  17. K. Yoshida
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  18. A. Ozawa
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  19. T. Kobayashi
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  20. I. Tanihata
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  21. H. Sagawa
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  22. H. Kitagawa
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  23. Gray F. Krebs
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  24. Jose R. Alonso
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  25. T. James M. Symons
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Sato, K., Miyake, T., Morishita, A. et al. Hyperfine interactions of 19O in TiO2 and quadrupole moments of 13,19O. Hyperfine Interactions 120, 661–665 (1999). https://doi.org/10.1023/A:1017031908770

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  • DOI: https://doi.org/10.1023/A:1017031908770

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