Halo structure of Be-14

Citation
M. Labiche et al., Halo structure of Be-14, PHYS REV L, 86(4), 2001, pp. 600-603
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
86
Issue
4
Year of publication
2001
Pages
600 - 603
Database
ISI
SICI code
0031-9007(20010122)86:4<600:HSOB>2.0.ZU;2-X
Abstract
The two-neutron halo nucleus Be-14 has been investigated in a kinematically complete measurement of the fragments (Be-12 and neutrons) produced in dis sociation at 35 MeV/nucleon on C and Pb targets. Two-neutron removal cross sections, neutron angular distributions, and invariant mass spectra were me asured, and the contributions from electromagnetic dissociation (EMD) were deduced. Comparison with three-body model calculations suggests that the ha lo wave function contains a large nu (2s(1/2))(2) admixture. The EMD invari ant mass spectrum exhibited enhanced strength near threshold consistent wit h a nonresonant soft-dipole excitation.