Coulomb breakup of the neutron-rich isotopes 15C and 17C

• DOI: 10.1016/s0370-2693(02)03016-2
• Publication Date: 2002-12-27T20:25:06Z
• Authors: U Datta Pramanik; T Aumann; K Boretzky; B.V Carlson; D Cortina; Th.W Elze; H Emling; H Geissel; A Grünschloß; M Hellström; S Ilievski; J.V Kratz; R Kulessa; Y Leifels; A Leistenschneider; E Lubkiewicz; G Münzenberg; P Reiter; H Simon; K Sümmerer; E Wajda; W Walus
• Keywords: Coulomb excitation

Coulomb breakup of unstable neutron-rich carbon isotopes 15,17C has been studied at energies around ∼500–600 MeV/nucleon. Non-resonant low-lying dipole strength is observed in these which can be explained by a direct mechanism. In addition to the decay neutron from excited projectile, γ-rays emitted fragments after are measured coincidence, giving access quantitative spectroscopic information. The factor deduced for valence occupying s1/2 level 15C ground state consistent with that obtained earlier (d,p) transfer reactions. analysis 17C shows most cross section yields 16C core states. predominant ground-state configuration found 16C(2+)⊗νs,d.