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The halo of $^{14}$Be
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2001, 86, pp.600-603. ⟨10.1103/PhysRevLett.86.600⟩, Physical Review Letters, 2001, 86, pp.600-603. ⟨10.1103/PhysRevLett.86.600⟩
- Publication Year :
- 2001
- Publisher :
- HAL CCSD, 2001.
-
Abstract
- NESTER; The two-neutron halo nucleus 14Be has been investigated in a kinematically complete measurement of the fragments (12Be 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 characteristic of a halo were observed and the electromagnetic (EMD) contributions deduced. Comparison with three-body model predictions indicate that the halo wavefunction contains a large 2s1/2^2 admixture. The EMD invariant mass spectrum exhibited a relatively narrow structure near threshold (Edecay=1.8+/-0.1 MeV, Gamma = 0.8+/-0.4 MeV) consistent with a soft-dipole excitation.
Details
- Language :
- English
- ISSN :
- 00319007 and 10797114
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2001, 86, pp.600-603. ⟨10.1103/PhysRevLett.86.600⟩, Physical Review Letters, 2001, 86, pp.600-603. ⟨10.1103/PhysRevLett.86.600⟩
- Accession number :
- edsair.dedup.wf.001..b2536d622cee3a2adee263a34a2954f1
- Full Text :
- https://doi.org/10.1103/PhysRevLett.86.600⟩