Coulomb excitation and transfer reactions with rare neutron-rich isotopes

Neutron-rich radioactive ion beams available from the HRIBF allow a variety of measurements around the 132 Sn region, including Coulomb excitation, fusion-evaporation, and neutron transfer. The B ( E 2 ; 0 + → 2 + ) value for first 2 + excited states of even-even neutron-rich 132–136 Te and 126–134 Sn have been measured by Coulomb excitationin inverse kinematics. The results are discussed in terms of the shell model and the quasiparticle random phase approximation. Neutron transfer onto a 134 Te beam, from 9 Be and 13 C targets to populate single-particle states in 135 Te, has also been studied. Gamma rays from the 13 C( 134 Te, 12 C) reaction were used to identify the ν i 13 / 2 state in 135 Te, at an energy of 2109 keV. These and other results, and plans for future experiments with these neutron-rich beams, are presented.