Structure and Reaction Studies of Loosely Bound Nuclei Using Radioactive Nuclear Beams

Coulomb breakup of neutron-rich nuclei around mass A ∼ 20 has been studied experimentally using secondary beams (∼ 500-600 MeV/u ) of unstable nuclei produced at GSI. The spectroscopic factors deduced for the neutron occupying s 1 / 2 level in 1 5 C and 1 4 B ground state is consistent with the earlier reported values. The data analysis for Coulomb breakup of 1 7 C shows that most of the cross section yields the 1 6 C core in its excited state. For 1 7 - 2 2 O, the low-lying E1 strength amounts up to about 12% of the energy weighted dipole sum rule strength depending on neutron excess.