| Institution: | (1) CSNSM, IN2P3-CNRS/Université Paris-Sud, 91405 Orsay, France;(2) Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria;(3) IReS, IN2P3-CNRS/Université Louis Pasteur, 67037 Strasbourg Cedex 2, France;(4) JINR, Joliot-Curie 6, 141980 Dubna, Moscow region, Russia;(5) Department of Physics and Astronomy, University of Manchester, M13 9PL Manchester, UK;(6) Commissariat à l'énergie Atomique, CEA/DSM/DAPNIA/SPhN, 91191 Gif-sur-Yvette Cedex, France;(7) IPNL, IN2P3-CNRS/Université Claude Bernard, 69622 Villeurbanne Cedex, France |
| Abstract: | High-spin states of the N = 87 nuclei, 147Nd and 145Ce, have been populated in the 12C + 238U and 18O + 208Pb fusion-fission reactions at 90 MeV and 85 MeV bombarding energy, respectively. The emitted γ-radiation was detected using
the Euroball III and IV arrays. High-spin states of the 147Nd isotope have been identified for the first time. The high-spin yrast and near-to-yrast structures of the 145Ce nucleus have been considerably extended. The newly observed structures, discussed by analogy with the neighbouring isotones,
show the coupling of an h9/2 neutron to the quadrupole and octupole excitations of the core. |
