Isospin and deformation studies in the odd-odd N=Z nucleus {sup 54}Co

Journal Article · Mon Nov 15 04:00:00 EST 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.054309· OSTI ID:21499167

Rudolph, D; Andersson, L -L; Ekman, J; Erten, O; Fahlander, C; Johansson, E K; Andreoiu, C ^[1]; Bengtsson, R; Ragnarsson, I ^[2]; Bentley, M A; Williams, S J ^[3]; Carpenter, M P; Seweryniak, D ^[4]; Charity, R J; Reviol, W; Sarantites, D G ^[5]; Clark, R M; Fallon, P; Macchiavelli, A O; Svensson, C E ^[6]

---

1. Department of Physics, Lund University, S-22100 Lund (Sweden)
2. Department of Mathematical Physics, LTH, Lund University, S-22100 Lund (Sweden)
3. School of Chemistry and Physics, Keele University, Keele, Staffordshire, ST5 5BG United Kingdom (United Kingdom)
4. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
5. Chemistry Department, Washington University, St. Louis, Missouri 63130 (United States)
6. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

High-spin states in the odd-odd N=Z nucleus {sup 54}Co have been investigated by the fusion-evaporation reaction {sup 28}Si({sup 32}S,1{alpha}1p1n){sup 54}Co. Gamma-ray information gathered with the Ge detector array Gammasphere was correlated with evaporated particles detected in the charged particle detector system Microball and a 1{pi} neutron detector array. A significantly extended excitation scheme of {sup 54}Co is presented, which includes a candidate for the isospin T=1, 6{sup +} state of the 1f{sub 7/2}{sup -2} multiplet. The results are compared to large-scale shell-model calculations in the fp shell. Effective interactions with and without isospin-breaking terms have been used to probe isospin symmetry and isospin mixing. A quest for deformed high-spin rotational cascades proved negative. This feature is discussed by means of cranking calculations.

• OSTI ID: 21499167
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
COBALT 54
COBALT ISOTOPES
DECAY
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
GAMMA RADIATION
GE SEMICONDUCTOR DETECTORS
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOSPIN
ISOTOPES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MILLISECONDS LIVING RADIOISOTOPES
MINUTES LIVING RADIOISOTOPES
NEUTRON DETECTORS
NEUTRON EMISSION
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
PARTICLE PROPERTIES
PROTON-EMISSION DECAY
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
SEMICONDUCTOR DETECTORS
SHELL MODELS
SILICON 28 TARGET
SPIN
SULFUR 32 REACTIONS
SYMMETRY
TARGETS