par Chatillon, Audrey;Theisen, Ch;Greenlees, P. T.;Auger, Gérard;Bastin, J. E.;Bouchez, E.;Bouriquet, Bertrand;Casandjian, J. M.;Cee, Rainer;Clément, E.;Dayras, Roland;de France, Gilles;de Toureil, R.;Eeckhaudt, Stéphane;Görgen, Andreas;Grahn, T.;Grévy, Stéphane;Hauschild, Klaus;Herzberg, Rolf Dietmar;Ikin, P. J. C.;Jones, G. D.;Jones, Peter;Julin, Rauno;Juutinen, Sakari;Kettunen, Heikki;Korichi, Ahmed;Korten, W.;Le Coz, Y.;Leino, Matti;Lopez-Martens, A.;Lukyanov, S. M.;Penionzhkevich, Yu E.;Perkowski, Jan;Pritchard, A.;Rahkilaa, P.;Rejmund, M.;Saren, J.;Scholeya, C.;Siem, Sunniva;Saint-Laurent, M. G.;Simenel, Cédric;Sobolev, Yu G.;Stodel, Ch.;Uusitalo, Juha;Villari, A.;Bender, Michaël 
;Bonche, Paul;Heenen, Paul-Henri
Référence European Physical Journal A. Hadrons and nuclei, 30, 2, page (397-411)
Publication Publié, 2006
;Bonche, Paul;Heenen, Paul-Henri Référence European Physical Journal A. Hadrons and nuclei, 30, 2, page (397-411)
Publication Publié, 2006
Article révisé par les pairs
| Résumé : | The odd-Z isotope 255Lr, its daughter 251Md and grand-daughter 247Es were studied in two experiments performed at GANIL and the University of Jyväskylä. The 255Lr nuclei were produced using the cold fusion-evaporation reaction 209Bi( 48Ca, 2n)255Lr at a bombarding energy of 217MeV. The single-particle structure and decay properties were investigated using α, γ and electron spectroscopy. The ground-state spin and parity could be assigned for 255Lr (1/2-) and 251Md (7/2 -). States corresponding to the 7/2+[633], 7/2 -[514] and 1/2-[521] Nilsson orbitals were observed. Results are compared to experimental data obtained in neighbouring isotopes and to Hartree-Fock-Bogoliubov calculations using the Skyrme interaction SLy4 and a density-dependent pairing interaction. The position of the 1/2-[521] orbital from the spherical 2f 5/2 shell is discussed. © Società Italiana di Fisica and Springer-Verlag 2006. |
