Halo structure of 14Be

M Labiche, Norman Clarke, Martin Freer, Brian Fulton, Steven Singer

Research output: Contribution to journalArticle

98 Citations (Scopus)


The two-neutron halo nucleus Be-14 has been investigated in a kinematically complete measurement of the fragments (Be-12 and neutrons) produced in dissociation at 35 MeV/nucleon on C and Pb targets. Two-neutron removal cross sections, neutron angular distributions, and invariant mass spectra were measured, and the contributions from electromagnetic dissociation (EMD) were deduced. Comparison with three-body model calculations suggests that the halo wave function contains a large nu (2s(1/2))(2) admixture. The EMD invariant mass spectrum exhibited enhanced strength near threshold consistent with a nonresonant soft-dipole excitation.
Original languageEnglish
Pages (from-to)600-603
Number of pages4
JournalPhysical Review Letters
Issue number4
Early online date1 Jan 2001
Publication statusPublished - 1 Jan 2001


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