Large deformation of the very neutron-rich nucleus 32Mg from intermediate-energy Coulomb excitation

T. Motobayashi, Y. Ikeda, K. Ieki, M. Inoue, N. Iwasa, T. Kikuchi, M. Kurokawa, S. Moriya, S. Ogawa, H. Murakami, S. Shimoura, Y. Yanagisawa, T. Nakamura, Y. Watanabe, M. Ishihara, T. Teranishi, H. Okuno, R. F. Casten

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623 Citations (Scopus)

Abstract

The Coulomb excitation of a very neutron-rich nucleus 32Mg to its 2+ state was studied using an unstable nuclear beam of 32Mg at 49.2 MeV/u with a 208Pb target. The B(E2) value of 454±78 e2fm4 was extracted by a coupled channel analysis. The value is in good agreement with recent predictions. It confirms a large deformation for 32Mg suggested by the low excitation energy of the 2+ state, and points to the vanishing of the N = 20 shell gap.

Original languageEnglish
Pages (from-to)9-14
Number of pages6
JournalPhysics Letters B
Volume346
Issue number1-2
DOIs
Publication statusPublished - 1995 Mar 2
Externally publishedYes

Keywords

  • B(E2:0 → 2) of Mg
  • Coulomb excitation
  • Radioactive beam

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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