Experimental nuclear level densities and {gamma}-ray strength functions in Sc and V isotopes

Journal Article · Thu Apr 17 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2920749· OSTI ID:21143168

Larsen, A C; Guttormsen, M; Ingebretsen, F; Messelt, S; Rekstad, J; Siem, S; Syed, N U. H. ^[1]; Chankova, R ^[2]; Loennroth, T ^[3]; Schiller, A ^[4]; Voinov, A ^[4]

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1. Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo (Norway)
2. North Carolina State University, Raleigh, NC 27695 (United States)
3. Department of Physics, Aabo Akademi University FIN-20500 Aabo (Finland)
4. Department of Physics and Astronomy Ohio University Athens, Ohio 45701 (United States)

The nuclear physics group at the Oslo Cyclotron Laboratory has developed a method to extract nuclear level density and {gamma}-ray strength function from first-generation {gamma}-ray spectra. This method is applied on the nuclei {sup 44,45}Sc and {sup 50,51}V in this work. The experimental level densities of {sup 44,45}Sc are compared to calculated level densities using a microscopic model based on BCS quasiparticles within the Nilsson level scheme. The {gamma}-ray strength functions are also compared to theoretical expectations, showing an unexpected enhancement of the {gamma}-ray strength for low {gamma} energies (E{sub {gamma}}{<=}3 MeV) in all the isotopes studied here. The physical origin of this enhancement is not yet understood.

• OSTI ID: 21143168
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1005; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BCS THEORY
ENERGY LEVELS
ENERGY-LEVEL DENSITY
GAMMA SPECTRA
MEV RANGE
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
OSLO CYCLOTRON
SCANDIUM 44
SCANDIUM 45
STATISTICAL MODELS
STRENGTH FUNCTIONS
VANADIUM 50
VANADIUM 51