Thumbnail
Access Restriction
Open

Author Batchelor, R. ♦ Ferguson, A. J. ♦ Gove, H. E. ♦ Litherland, A. E.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher Elsevier
Language English
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.
ISSN 00295582
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-04-01
Publisher Department Atomic Energy of Canada Ltd., Chalk River, Ont.
Journal Nuclear Physics
Volume Number 16
Issue Number 1
Organization Atomic Energy of Canada Ltd., Chalk River, Ont.


Open content in new tab

   Open content in new tab