Nuclear spin alignment of 12,13B produced in heavy ion collisions

T. Nagatomo, K. Matsuta, K. Hashimoto, M. Ota, K. Arimura, K. Minamisono, T. Sumikama, M. Ogura, T. Iwakoshi, T. Miyake, S. Kudo, K. Akutsu, T. Minamisono, M. Fukuda, M. Mihara, S. Momota, Y. Nojiri, A. Kitagawa, M. Torikoshi, M. KanazawaM. Suda, M. Hirai, T. J.M. Symons, G. F. Krebs, J. R. Alonso, S. Y. Zhu, J. Z. Zhu, Y. J. Xu

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The nuclear spin alignments of the β-emitting fragments 12B(Iπ = 1+, T1/2 = 20.2 ms) and 13B(Iπ = 3/2-, T1/2 = 17.4 ms) produced in the 100A-MeV 13C, 15N + 9Be collisions respectively have been observed for the first time detecting asymmetric β-ray emission from these nuclei. By means of the spin manipulation technique based on the hyperfine interaction of B isotopes in TiO2, both the polarization P and the alignment A were determined reliably. The obtained P and A were significantly smaller than the expectation from the kinematical model. From the fact that the quenching factors for P and A are almost the same, there may be some depolarization mechanism in the collision process itself.

本文言語English
ページ(範囲)233-237
ページ数5
ジャーナルHyperfine Interactions
136-137
3-8
DOI
出版ステータスPublished - 2001

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 核物理学および高エネルギー物理学
  • 凝縮系物理学
  • 物理化学および理論化学

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