Nuclear level densities and γ-ray strength functions in 44,45Sc
Creators
- 1. Department of Physics, University of Oslo, P. O. Box 1048 Blindern, N-0316 Oslo (Norway)
- 2. North Carolina State University, Raleigh, North Carolina 27695, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708 (United States)
- 3. Department of Physics, Angstrombo Akademi University, FIN-20500 Angstrombo (Finland)
- 4. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
- 5. 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)
Description
The scandium isotopes 44,45Sc were studied with the 45Sc(3He, αγ)44Sc and 45Sc(3He, 3He'γ)45Sc reactions, respectively. The nuclear level densities and γ-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 γ-ray strength functions are compared to theoretical models of the E1, M1, and E2 strength and to data from (γ, n) and (γ,p) experiments. The strength functions show an enhancement at low γ energies that cannot be explained by the present standard models
Additional details
Identifiers
- DOI
- 10.1103/PhysRevC.76.044303;
- arXiv
- arXiv:0706.0533v3;
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 76
- Journal Issue
- 4
- Journal Page Range
- p. 044303-044303.11
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39081863
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- 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
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CHARGED-PARTICLE REACTIONS; DAYS LIVING RADIOISOTOPES; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY-LEVEL TRANSITIONS; EVEN-ODD NUCLEI; FUNCTIONS; HELIUM ISOTOPES; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MULTIPOLE TRANSITIONS; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; SCANDIUM ISOTOPES; STABLE ISOTOPES; TARGETS
Optional Information
- Notes
- (c) 2007 The American Physical Society