Interaction cross sections for Ne isotopes towards the island of inversion and halo structures of 29Ne and 31Ne

M. Takechi, T. Ohtsubo, M. Fukuda, D. Nishimura, T. Kuboki, T. Suzuki, T. Yamaguchi, A. Ozawa, T. Moriguchi, H. Ooishi, D. Nagae, H. Suzuki, S. Suzuki, T. Izumikawa, T. Sumikama, M. Ishihara, H. Geissel, N. Aoi, Rui Jiu Chen, De Qing FangN. Fukuda, I. Hachiuma, N. Inabe, Y. Ishibashi, Y. Ito, D. Kameda, T. Kubo, K. Kusaka, M. Lantz, Yu Gang Ma, K. Matsuta, M. Mihara, Y. Miyashita, S. Momota, K. Namihira, M. Nagashima, Y. Ohkuma, T. Ohnishi, M. Ohtake, K. Ogawa, H. Sakurai, Y. Shimbara, T. Suda, H. Takeda, S. Takeuchi, K. Tanaka, R. Watanabe, M. Winkler, Y. Yanagisawa, Y. Yasuda, K. Yoshinaga, A. Yoshida, K. Yoshida

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)


Interaction cross sections (σ I) for Ne isotopes from the stability line to the vicinity of the neutron drip line have been measured at around 240 MeV/nucleon using BigRIPS at RIBF, RIKEN. The σ I for 27-32Ne in every case exceed the systematic mass-number dependence of σ I for stable nuclei, which can be explained by considering the nuclear deformation. In particular the σ I for 29Ne and 31Ne are significantly greater than those of their neighboring nuclides. These enhancements of σ I for 29Ne and 31Ne cannot be explained by a single-particle model calculation under the assumption that the valence neutron of 29Ne ( 31Ne) occupies the 0d 3/2 (0f 7/2) orbital, as expected from the standard spherical shell ordering. The present data suggest an s dominant halo structure of 29Ne and s- or p-orbital halo in 31Ne.

Original languageEnglish
Pages (from-to)357-361
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - 2012 Feb 1
Externally publishedYes


  • Island of inversion
  • Neutron halo

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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