Physics with heavy neutron-rich RIBs at the HRIBF

Abstract

The Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory has recently produced the world's first post-accelerated beams of heavy neutron-rich nuclei. The first experiments with these beam are described, and the results discussed. B(E2

0(+) --> 2(+)) values for neutron-rich Sn-121,Sn-128 and Te-132,Te-134,Te-136 isotopes have been measured by Coulomb excitation in inverse kinematics. The results for Te-132 and Te-134 (N = 80, 82) show excellent agreement with systematics of lighter Te isotopes, but the B(E2) value for Te-136 (N = 84) is unexpectedly small. Single-neutron transfer reactions with a Te-134 beam on Be-nat and C-13 targets at energies just above the Coulomb barrier have also been studied.