Coulomb excitation and transfer reactions with neutron-rich radioactive beams

Abstract

Neutron-rich radioactive ion beams available from the HRIBF allow a variety of measurements around the Sn-132 region, including Coulomb excitation and single-nucleon transfer. The B (E2

0(+) -> 2(+)) values for first 2(+) excited states of even-even neutron-rich Te132-136 and Sn126-130 have been measured by Coulomb excitation in inverse kinematics. Neutron transfer onto a Te-134 beam from Be-9 and C-13 targets, to populate single-particle states in Te-135, has also been studied. Gamma rays from the C-13(Te-134, C-12) reaction were used to identify the nu i(13/2) state in Te-135, at an energy of 2109 keV. These and other results, and plans for future experiments with these neutron-rich beams, are presented.