COULOMB-EXCITATION OF RADIOACTIVE NUCLEAR BEAMS IN INVERSE KINEMATICS

Two techniques for determining B(E2:0(1)(+)--> 2(1)(+)) values using l ow-energy Coulomb excitation of Radioactive Nuclear Beams in inverse k inematics are presented. One method, applicable if the lifetime of the excited state is similar to 1 ns, uses a linear array of NaI(T1) dete ctors to measure the decay curve, and thus the 2(1)(+) state lifetime, for Coulomb excited radioactive beam nuclei as they decay in flight d ownstream from a carbon excitation target. In the second method, usefu l when lifetimes are short, <1 ns, or for low intensity beams, a throu gh-well NaI(T1) detector is used to measure the Coulomb excitation cro ss section from which the B(E2:0:(+)(1)--> 2(1)(+)) value is calculate d. The results of test experiments with beams of stable Os isotopes ar e presented.