Quadrupole Effects in NMR Spectra on Short-Lived β-Radioactive Nuclei, ^<12>B and ^<12>N

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概要

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• Quadrupole effects in NMR on ^<12>B(T_<1/2>=11 ms) have been investigated by using the polarized nuclei produced and implanted through nuclear reactions and the resultant asymmetric β decay. The implantation media were polycrystalline bcc metals (Nb, Mo, Ta and W), TiB_2 and ZrB_2. To increase the observable effects in NMR, a frequency-modu-lated r.f. field was employed. The spectra in bcc metals show the characteristics of quadrupole interaction for nuclear spin I=1h, and the determined coupling constants depend largely on the periodic groups of the related elements. The spectrain the bcc metals together with those in the fcc metals (Al, Cu, Pt and Au) indicate that the major implanted sites are interstitial. From the results on TiB_2 and ZrB_2 and the known values on ^<11>B, the ratio of quadrupole moments is determined as ∣Q(^<12>B)∣=0.017_1±0.001_6 b.

• 社団法人日本物理学会の論文
• 1971-02-05

著者

• Minamisono Tadanori

  Department Of Physics And Laboratory Of Nuclear Studies Faculty Of Science Osaka University

• Mizobuchi Akira

  Laboratory Of Nuclear Studies And Department Of Physics Faculty Of Science Osaka University

• Mizobuchi Akira

  Department Of Physics And Laboratory Of Nuclear Studies Faculty Of Science Osaka University

• Minamisono Tadanori

  Laboratory Of Nuclear Studies And Department Of Physics Faculty Of Science Osaka University

• Sugimoto Kenzo

  Laboratory Of Nuclear Studies And Department Of Physics Faculty Of Science Osaka University

• MATUDA Kozi

  Laboratory of Nuclear Studies and Department of Physics, Faculty of Science, Osaka University

• Matuda Kozi

  Laboratory Of Nuclear Studies And Department Of Physics Faculty Of Science Osaka University:(present

• MINAMISONO Tadanori

  Laboratory of Nuclear Studies and Department of Physics, Faculty of Science, Osaka University

• MIZOBUCHI Akira

  Laboratory of Nuclear Studies and Department of Physics, Faculty of Science, Osaka University

• MATUDA Kozi

  Laboratory of Nuclear Studies and Department of Physics, Faculty of Science, Osaka University:(Present address) Nisshin Electric Company

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• Quadrupole Effects in NMR Spectra on Short-Lived β-Radioactive Nuclei, ^B and ^N
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