Spectroscopy and single-particle structure of the odd- Z heavy elements 255Lr, 251Md and 247Es
Creators
- Chatillon, A.1
- Theisen, C.1
- Bouchez, E.1
- Clement, E.1
- Dayras, R.1
- Goergen, A.1
- Korten, W.1
- Le Coz, Y.1
- Simenel, C.1
- Bender, M.1
- Greenlees, P.T.2
- Eeckhaudt, S.2
- Grahn, T.2
- Jones, P.2
- Julin, R.2
- Juutinen, S.2
- Kettunen, H.2
- Leino, M.2
- Perkowski, J.2
- Rahkila, P.2
- Saren, J.2
- Scholey, C.2
- Uusitalo, J.2
- Auger, G.3
- Bouriquet, B.3
- Casandjian, J.M.3
- Cee, R.3
- France, G. de3
- Toureil, R. de3
- Rejmund, M.3
- Saint-Laurent, M.G.3
- Stodel, C.3
- Villari, A.3
- Bastin, J.E.4
- Herzberg, R.D.4
- Ikin, P.J.C.4
- Jones, G.D.4
- Pritchard, A.4
- Grevy, S.5
- Hauschild, K.6
- Korichi, A.6
- Lopez-Martens, A.6
- Siem, S.6
- Lukyanov, S.M.7
- Penionzhkevich, Yu.E.7
- Sobolev, Yu.G.7
- Bonche, P.8
- 1. CEA Saclay, DSM/DAPNIA/SPhN, Gif-sur-Yvette Cedex (France)
- 2. University of Jyvaeskylae, Department of Physics, P.O. Box 35 (Finland)
- 3. GANIL, Boulevard Henri Becquerel, B.P. 55027, Caen Cedex 5 (France)
- 4. University of Liverpool, Oliver Lodge Laboratory, Department of Physics, Liverpool (United Kingdom)
- 5. LPC, CAEN Cedex (France)
- 6. CSNSM, Orsay (France)
- 7. Joint Institute for Nuclear Research, Dubna (Russian Federation)
- 8. CEA Saclay, DSM/SPhT, Gif-sur-Yvette Cedex (France)
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 Jyvaeskylae. 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. (orig.)
Availability note (English)
Available from: http://dx.doi.org/10.1140/epja/i2006-10134-5Additional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. A
- Journal Volume
- 30
- Journal Issue
- 2
- Journal Page Range
- p. 397-411
- ISSN
- 1434-6001
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 38009838
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALPHA DECAY; ALPHA SPECTRA; DE-EXCITATION; DELAYED GAMMA RADIATION; EINSTEINIUM 247; ENERGY SPECTRA; EXCITED STATES; EXPERIMENTAL DATA; GAMMA SPECTRA; GROUND STATES; HALF-LIFE; ISOMERIC NUCLEI; LAWRENCIUM 255; MENDELEVIUM 251; MEV RANGE 100-1000; MULTIPOLARITY; PARITY; SPIN
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; BETA DECAY RADIOISOTOPES; DATA; DECAY; EINSTEINIUM ISOTOPES; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; GAMMA RADIATION; HEAVY NUCLEI; INFORMATION; IONIZING RADIATIONS; ISOTOPES; LAWRENCIUM ISOTOPES; MENDELEVIUM ISOTOPES; MEV RANGE; MINUTES LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPECTRA