Nuclear level densities and {gamma}-ray strength functions in {sup 44,45}Sc
- Department of Physics, University of Oslo, P. O. Box 1048 Blindern, N-0316 Oslo (Norway)
- North Carolina State University, Raleigh, North Carolina 27695, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708 (United States)
- Department of Physics, Angstrombo Akademi University, FIN-20500 Angstrombo (Finland)
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States) and Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region (Russian Federation)
The scandium isotopes {sup 44,45}Sc were studied with the {sup 45}Sc({sup 3}He, {alpha}{gamma}){sup 44}Sc and {sup 45}Sc({sup 3}He, {sup 3}He{sup '}{gamma}){sup 45}Sc reactions, respectively. The nuclear level densities and {gamma}-ray strength functions have been extracted using the Oslo method. The experimental level densities are compared to calculated level densities obtained from a microscopic model based on BCS quasiparticles within the Nilsson level scheme. This model also gives information about the parity distribution and the number of broken Cooper pairs as a function of excitation energy. The experimental {gamma}-ray strength functions are compared to theoretical models of the E1, M1, and E2 strength and to data from ({gamma}, n) and ({gamma},p) experiments. The strength functions show an enhancement at low {gamma} energies that cannot be explained by the present standard models.
- OSTI ID:
- 21067788
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 76, Issue 4; Other Information: DOI: 10.1103/PhysRevC.76.044303; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COOPER PAIRS
DISTRIBUTION
E1-TRANSITIONS
E2-TRANSITIONS
ENERGY LEVELS
ENERGY-LEVEL DENSITY
EXCITATION
GAMMA RADIATION
HELIUM 3
HELIUM 3 REACTIONS
M1-TRANSITIONS
NUCLEAR STRUCTURE
PARITY
QUASI PARTICLES
SCANDIUM 44
SCANDIUM 45
SCANDIUM 45 TARGET
STRENGTH FUNCTIONS