{gamma}-Ray Spectroscopy at the Limits: First Observation of Rotational Bands in {sup 255}Lr

Journal Article · Fri May 29 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.212501· OSTI ID:21319474

Ketelhut, S; Greenlees, P T; Eeckhaudt, S; Grahn, T; Jakobsson, U; Jones, P; Julin, R; Juutinen, S; Leino, M; Leppaenen, A -P; Nyman, M; Pakarinen, J; Peura, P; Rahkila, P; Ruotsalainen, P; Saren, J; Scholey, C; Sorri, J; Uusitalo, J ^[1]; Ackermann, D ^[2]

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1. Department of Physics, University of Jyvaeskylae, FIN-40014 Jyvaeskylae (Finland)
2. Gesellschaft fuer Schwerionenforschung (GSI), D-64291 Darmstadt (Germany)

The rotational band structure of {sup 255}Lr has been investigated using advanced in-beam {gamma}-ray spectroscopic techniques. To date, {sup 255}Lr is the heaviest nucleus to be studied in this manner. One rotational band has been unambiguously observed and strong evidence for a second rotational structure was found. The structures are tentatively assigned to be based on the 1/2{sup -}[521] and 7/2{sup -}[514] Nilsson states, consistent with assignments from recently obtained {alpha} decay data. The experimental rotational band dynamic moment of inertia is used to test self-consistent mean-field calculations using the Skyrme SLy4 interaction and a density-dependent pairing force.

• OSTI ID: 21319474
• Journal Information: Physical Review Letters, Vol. 102, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.102.212501; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
GAMMA RADIATION
GAMMA SPECTROSCOPY
LAWRENCIUM 255
MEAN-FIELD THEORY
MOMENT OF INERTIA
ROTATIONAL STATES
SKYRME POTENTIAL