|Author||Batchelor, R. ♦ Ferguson, A. J. ♦ Gove, H. E. ♦ Litherland, A. E.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PHYSICS ♦ ALUMINUM 25 ♦ ANGULAR DISTRIBUTION ♦ BRANCHING RATIO ♦ COLLECTIVE MODEL ♦ CONFIGURATION ♦ DECAY ♦ EFFICIENCY ♦ ENERGY ♦ ENERGY LEVELS ♦ ENERGY RANGE ♦ EXCITATION ♦ GAMMA DETECTION ♦ GAMMA RADIATION ♦ INELASTIC SCATTERING ♦ MAGNESIUM 24 ♦ MEASURED VALUES ♦ MEV RANGE ♦ NUCLEAR MODELS ♦ NUCLEAR STRUCTURE ♦ NUCLEI ♦ PROTON BEAMS ♦ PROTONS ♦ RESONANCE ♦ SCATTERING ♦ SPECTRA ♦ SPIN ♦ TARGETS ♦ TRANSIENTS ♦ TRANSITIONS|
|Abstract||The Mg/sup 24/(p,p' gamma )Mg/sup 24/ reaction was studied in the proton energy range from 5 to 6 Mev. The yield of 4.14 Mev gamma rays shows two resonances, at 5.24 and 5.72 Mev, corresponding to states in Al/sup 25/ at 7.30 and 7.77 Mev. The total widths of these resonances are 100 plus or minus 20 and 340 plus or minus 50 kev. Angular distributions and correlations of the gamma -rays from the 4.24 Mev state of Mg/sup 24/ measured at the 5.72 Mev resonance show that the 4.24 Mev state has spin 2. Spins of 1 and 3 are eliminated by the measurements. The spin of the 7.77 Mev state of Al/sup 25/ is most probably 3/2. The measured branching ratio of the gamma -rays from the 4.24 Mev state to the ground and 1.37 Mev states is (2.9 plus or minus 0.5): 1 and the E2/MI amplitude ratio for the 2.87 Mev transition is +23 plus or minus 9. These data give qualitative support to the collective model but there are quantitative disagreements with the detailed predictions for both axially symmetric and asymmetric nuclei.|
|Learning Resource Type||Article|
|Publisher Department||Atomic Energy of Canada Ltd., Chalk River, Ont.|
|Organization||Atomic Energy of Canada Ltd., Chalk River, Ont.|
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