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AbstractAbstract
[en] The 48Ca(10B,α3n)51V and 48Ca(10B,5n) 53Mn reactions have been used to populate high spin states in 51V and 53Mn. New levels were observed at 7335 keV in 51V, with a probable spin of J = 23/2 and at 5614, 6533, 7004, and 7965 keV in 53Mn with a probable spin sequenceof J = 19/2, 21/2, 23/2, and 25/2, respectively. The Doppler shift attenuation method was used to measure the mean lifetimes of four levels in 51V and three in 53Mn. The high spin states were found to decay predominantly by M1 transitions, while competing E2 decays were not significantly enhanced, revealing no evidence of any collective deformation. Shell model calculations of 1p6h states in 51V and 1p4h states in 53Mn were found to indicate that these excited states are based mainly on neutron excitation from the f/sub 7/2/ shell. The calculations reproduced both the positions of the yrast energy levels and their electromagnetic decays
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Record Type
Journal Article
Journal
Phys. Rev., C; v. 18(5); p. 2169-2178
Country of publication
ALPHA PARTICLES, BORON 10 REACTIONS, BRANCHING RATIO, CALCIUM 48 TARGET, COINCIDENCE SPECTROMETRY, CROSS SECTIONS, DOPPLER EFFECT, EVAPORATION MODEL, GAMMA SPECTRA, HEAVY ION FUSION REACTIONS, HIGH SPIN STATES, LIFETIME, M1-TRANSITIONS, MANGANESE 53, MEV RANGE 10-100, NEUTRONS, PARITY, SHELL MODELS, SPIN, VANADIUM 51
ANGULAR MOMENTUM, BARYONS, BETA DECAY RADIOISOTOPES, CHARGED PARTICLES, COINCIDENCE METHODS, COUNTING TECHNIQUES, ELECTRON CAPTURE RADIOISOTOPES, ELEMENTARY PARTICLES, ENERGY LEVELS, ENERGY RANGE, ENERGY-LEVEL TRANSITIONS, FERMIONS, HADRONS, HEAVY ION REACTIONS, HELIUM IONS, INTERMEDIATE MASS NUCLEI, IONS, ISOTOPES, MANGANESE ISOTOPES, MATHEMATICAL MODELS, MEV RANGE, MULTIPOLE TRANSITIONS, NUCLEAR MODELS, NUCLEAR REACTIONS, NUCLEI, NUCLEONS, NUCLEOSYNTHESIS, ODD-EVEN NUCLEI, PARTICLE PROPERTIES, RADIOISOTOPES, SPECTRA, STABLE ISOTOPES, TARGETS, VANADIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
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