Coulomb dissociation of a halo nucleus 11Be at 72A MeV

T. Nakamura, S. Shimoura, T. Kobayashi, T. Teranishi, K. Abe, N. Aoi, Y. Doki, M. Fujimaki, N. Inabe, N. Iwasa, K. Katori, T. Kubo, H. Okuno, T. Suzuki, I. Tanihata, Y. Watanabe, A. Yoshida, M. Ishihara

Research output: Contribution to journalArticlepeer-review

301 Citations (Scopus)

Abstract

We have measured the excitation energy spectrum of the 10Be+n system in the Coulomb dissociation of the one-neutron-halo nucleus 11Be on a Pb target at 72A MeV. We have determined the dipole strength distribution dB (E1) /dEx which shows a strong peak at about 800 keV excitation energy. The spectral shape is consistent with a direct breakup model. The Coulomb post accelaration effect has been observed also to support the direct breakup mechanism. The E1 dominance of the Coulomb dissociation is confirmed by observed angular distributions of 10Be in the 11Be rest frame.

Original languageEnglish
Pages (from-to)296-301
Number of pages6
JournalPhysics Letters B
Volume331
Issue number3-4
DOIs
Publication statusPublished - 1994 Jul 7
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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