/sup 12/C(/sup 16/O,. cap alpha. )/sup 24/Mg( reaction in the energy region E/sub c. m. / = 26. 6 to 42. 9 MeV

Journal Article · Fri Apr 01 04:00:00 EST 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.27.1540· OSTI ID:6032046

Bechara, M J; Lazzarini, A J; Ledoux, R J; Cosman, A E.R.

The /sup 12/C+ /sup 16/O resonance structure in the /sup 28/Si nucleus is examined by means of the /sup 12/C(/sup 16/O,..cap alpha..)/sup 2r/Mg reaction excitation functions in the energy range E/sub c.m./ = 26.6 to 42.9 MeV in 430 keV steps at theta/sub lab/ = 7.5/sup 0/. We could identify 64 discrete states in /sup 24/Mg up to 31.7 MeV of excitation energy. The excitation functions show abundant structure over the entire energy range. The summed excitation functions, which tend to average out statistical fluctuations, show pronounced intermediate structure enhancement in the cross section at E/sub c.m./approx. =29.5, 32.2, and 35 MeV and indicate the presence of a smaller peak at 37.3 MeV. The widths of these structures are about 1 MeV, which is intermediate between the value expected from ion-ion potential resonances and statistical fluctuations. The nonstatistical character of these structures is reinforced by some statistical tests and by the correlations in energy and width found in several exit channels. Our data also suggest a possible structural relationship between the /sup 28/Si resonances and certain /sup 24/Mg final states.

• Research Organization: Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6032046
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALPHA PARTICLES
ANGULAR DISTRIBUTION
CARBON 12 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
HEAVY ION REACTIONS
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 24
MAGNESIUM ISOTOPES
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUCLEI
OXYGEN 16 REACTIONS
SILICON 28
SILICON ISOTOPES
STABLE ISOTOPES
TARGETS