Development of a Nuclear Spin Dewar: Hyperfine Interactions of the Short-Lived βEmitter 12B in TiO2

M. Ogura, K. Minamisono, T. Sumikama, T. Nagatomo, T. Iwakoshi, T. Miyake, S. Kudo, K. Akutsu, M. Mihara, M. Fukuda, K. Matsuta, H. Akai, T. Minamisono, K. Sato

研究成果: Article査読

1 被引用数 (Scopus)

抄録

The β-NMR detection of 12B (Iπ = 1+, T1/2 = 20.2 msec) implanted in a TiO2 (rutile) single crystal following a nuclear reaction showed that its spin polarization produced in the reaction is totally maintained during its lifetime. Two implantation sites with relative populations 9:1 were identified. The electric field gradients (EFGs) were determined to be q = +(37.1 ± 0.5) 1015 V/cm2 with π < 0.03 and q = +(185 ± 5) 1015 V/cm2 with π = 0.62 ± 0.02 for the major (90%) and minor (10%) sites, respectively. The EFGs were compared with the theoretical values given by the band-structure calculation in the framework of the KKR method. TiO2 crystals with proper treatment can be a good “Spin Dewar” in which any short-lived nuclei can be implanted, and their spin polarizations as produced in nuclear reactions can be maintained during their lifetime.

本文言語English
ページ(範囲)599-602
ページ数4
ジャーナルZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
57
6-7
DOI
出版ステータスPublished - 2002 7月
外部発表はい

ASJC Scopus subject areas

  • 数理物理学
  • 物理学および天文学(全般)
  • 物理化学および理論化学

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