Nuclear spin orientation created in heavy ion collisions and the sign of the Q moment of 13B

T. Nagatomo, K. Matsuta, Y. Nakashima, T. Sumikama, M. Ogura, K. Akutsu, T. Iwakoshi, H. Fujiwara, T. Minamisono, M. Fukuda, M. Mihara, T. Miyake, K. Minamisono, S. Momota, Y. Nojiri, A. Kitagawa, M. Sasaki, M. Torikoshi, M. Kanazawa, M. SudaM. Hirai, S. Sato, S. Y. Zhu, J. Z. Zhu, Y. J. Xu, Y. N. Zheng, J. R. Alonso, G. F. Krebs, T. M. Symons

Research output: Contribution to journalArticlepeer-review


The momentum dependences of the nuclear spin polarization P and alignment A of 13B(Iπ = 3/2+, T1/2 = 17.36 ms) produced in the 100A MeV 15N + Be collisions have been measured by detecting β-ray asymmetry. Because both the P and A were significantly smaller than the prediction from a simple kinematical model, some relaxation mechanisms must be take into account. Comparing the signs of the observed alignment of 12B, the sign of the quadrupole coupling constant eqQ of 13B in TiO2 was determined to be positive.

Original languageEnglish
Pages (from-to)273-276
Number of pages4
JournalHyperfine Interactions
Issue number1-4
Publication statusPublished - 2005 Dec
Externally publishedYes


  • Alignment
  • B
  • Heavy ion collision
  • Polarization
  • TiO
  • eqq
  • β-NMR

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


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