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20 April 2024

» pubmed » pmid11177891

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Halo structure of (14)Be
M Labiche ; N A Orr ; F M Marqués ; J C Angélique ; L Axelsson ; B Benoit ; U C Bergmann ; M J Borge ; W N Catford ; S P Chappell ; N M Clarke ; G Costa ; N Curtis ; A D’Arrigo ; E de Góes Brenn ; O Dorvaux ; G Fazio ; M Freer ; B R Fulton ; G Giardina ; S Grévy ; D Guillemaud-Mueller ; F Hanappe ; B Heusch ; K L Jones ; B Jonson ; C Le Brun ; S Leenhardt ; M Lewitowicz ; M J Lopez ; K Markenroth ; A C Mueller ; T Nilsson ; A Ninane ; G Nyman ; F de Oliveira ; I Piqueras ; K Riisager ; M G Saint Laurent ; F Sarazin ; S M Singer ; O Sorlin ; L Stuttgé ;
Date:	22 Jan 2001
Journal:	Phys Rev Lett, 86 (4), 600-3
Abstract:	The two-neutron halo nucleus (14)Be has been investigated in a kinematically complete measurement of the fragments ((12)Be 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.
Source:	PubMed, pmid11177891
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