Spectroscopy and single-particle structure of the odd-Z heavy elements $^{255}$Lr, $^{251}$Md and $^{247}$Es

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-particl...

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Veröffentlicht in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2006-11, Vol.30, p.397-411
Hauptverfasser: Chatillon, A., Theisen, Ch, Greenlees, P.T., Auger, G., Bastin, J.E., Bouchez, E., Bouriquet, B., Casandjian, J.M., Cee, R., Clément, E., Dayras, R., de France, G., de Tourreil, R., Eeckhaudt, S., Görgen, A., Grahn, T., Grévy, S., Hauschild, K., Herzberg, R.-D., Ikin, P.J.C., Jones, G.D., Jones, P., Julin, R., Juutinen, S., Kettunen, H., Korichi, A., Korten, W., Le Coz, Y., Leino, M., Lopez-Martens, A., Lukyanov, S.M., Penionzhkevich, Yu.E., Pritchard, A., Rahkila, P., Rejmund, M., Saren, J., Scholey, C., Siem, S., Saint-Laurent, M.G., Simenel, C., Sobolev, Yu.G., Stodel, C., Uusitalo, J., Villari, A.C.C., Bender, M., Bonche, P., Heenen, P.-H.
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container_title The European physical journal. A, Hadrons and nuclei
container_volume 30
creator Chatillon, A.
Theisen, Ch
Greenlees, P.T.
Auger, G.
Bastin, J.E.
Bouchez, E.
Bouriquet, B.
Casandjian, J.M.
Cee, R.
Clément, E.
Dayras, R.
de France, G.
de Tourreil, R.
Eeckhaudt, S.
Görgen, A.
Grahn, T.
Grévy, S.
Hauschild, K.
Herzberg, R.-D.
Ikin, P.J.C.
Jones, G.D.
Jones, P.
Julin, R.
Juutinen, S.
Kettunen, H.
Korichi, A.
Korten, W.
Le Coz, Y.
Leino, M.
Lopez-Martens, A.
Lukyanov, S.M.
Penionzhkevich, Yu.E.
Pritchard, A.
Rahkila, P.
Rejmund, M.
Saren, J.
Scholey, C.
Siem, S.
Saint-Laurent, M.G.
Simenel, C.
Sobolev, Yu.G.
Stodel, C.
Uusitalo, J.
Villari, A.C.C.
Bender, M.
Bonche, P.
Heenen, P.-H.
description 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 2f5/2 shell is discussed.
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subjects Nuclear Experiment
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title Spectroscopy and single-particle structure of the odd-Z heavy elements $^{255}$Lr, $^{251}$Md and $^{247}$Es
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