Reaction Channel selection techniques and gamma - gamma fast-timing spectroscopy using the v-Ball Spectrometer

Abstract

The reaction of a pulsed O-18 beam on a self-supporting and gold-backed isotopically-enriched Dy-164 target of thickness 6.3 mg/cm(2) at separate primary beam energies of 71, 76 and 80 MeV was studied at the accelerator at the ALTO facility of the IPN Orsay. The gamma rays produced were detected using the newly-constructed v-Ball spectrometer which comprised of HPGe and LaBr3(Ce) detectors. This conference paper describes the methodology and effectiveness of multiplicity/sum-energy gating, for channel selection between fusion evaporation events and lower multiplicity/energy events from inelastic nuclear scattering and Coulomb excitation of the target, and from two-neutron transfer reactions to Dy-166.