par Pokrovsky, I.V.;Itkis, Mikhail;Itkis, J.M.;Kondratiev, N.A.;Kozulin, E.M.;Prokhorova, E.V.;Salamatin, V.S.;Pashkevich, V.V.;Mulgin, S.I.;Rusanov, Ya;Zhdanov, S.V.;Chubarian, G.G.;Hurst, Brad;Schmitt, Richard;Agodi, Clementina;Bellia, G.;Calabretta, Luciano;Lukashin, K.;Maiolino, Concettina;Kelic, Aleksandra;Rudolf, Gérard;Stuttge, Louise;Hanappe, Francis 
Référence Physical review. C. Nuclear physics, 62, 1, page (146151-1461510)
Publication Publié, 2000-07
Référence Physical review. C. Nuclear physics, 62, 1, page (146151-1461510)
Publication Publié, 2000-07
Article révisé par les pairs
| Résumé : | Results of fission fragment mass-energy distributions of the compound 226Th nucleus formed in the subbarrier fusion reaction 18O+H208Pb at an energy of 18O ions Elab=78 MeV are reported. The reaction has been studied twice using two different accelerators, and both sets of experimental data agree quite well. Performed analysis of the experimental data with the use of a new multicomponent method has shown that alongside the well-known modes, i.e., the symmetric (S) and two asymmetric modes standard-one and standard-two, a high-energy mode standard-three has manifested itself. The last named mode appears due to the influence of the close-to-sphere neutron shell with N≈50 in the light fission fragment group. Theoretical calculations of the prescission shapes of the fissioning nuclei 224,226Th confirm this conclusion. |
