Reaction cross sections for /sup 16/O + /sup 12/C

Journal Article · Thu Feb 01 00:00:00 EST 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.19.408· OSTI ID:6201199

Kolata, J J; Freeman, R M; Haas, F; Heusch, B; Gallmann, A

The partial production cross sections for 11 nuclides produced in the fusion of /sup 12/C + /sup 16/O, in the energy region from 17--28 MeV (c.m.), have been measured and compared to an evaporation-model calculation. The comparison, though not completely satisfactory, provides no evidence that such models are inadequate to explain the observations. The ''effective'' ..cap alpha..-particle evaporation yield, deduced from measured partial production cross sections, is shown to be in excellent agreement with previously measured ..cap alpha..-particle yields up to 26 MeV (c.m.). The implications of this agreement for the apparent discrepancies between heavy-particle and ..gamma..-ray measurements of the fusion yield are discussed. The average total fusion yield, including 3..cap alpha.. evaporation to /sup 16/O, is found to be nearly constant at about 1 barn from 20--26 MeV (c.m.). Narrow, regular fluctuations in the yield, with a periodicity of 725 keV and an average width of 150--200 keV are observed. These anomalies are correlated in the various partial-production excitation functions. It is found, however, that the /sup 16/O and /sup 20/Ne excitation functions are anticorrelated and possible explanations for this latter observation are discussed.

• Research Organization: University of Notre Dame, Notre Dame, Indiana 46556
• OSTI ID: 6201199
• Journal Information: Phys. Rev., C; (United States), Vol. 19:2
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12 TARGET
OXYGEN 16 REACTIONS
FUSION REACTIONS
ALPHA SPECTRA
CROSS SECTIONS
EVAPORATION MODEL
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
GAMMA SPECTRA
GRAPHS
MEV RANGE 10-100
NUCLEAR REACTION YIELD
CHARGED-PARTICLE REACTIONS
DATA
DATA FORMS
ENERGY RANGE
HEAVY ION REACTIONS
INFORMATION
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
SPECTRA
TARGETS
YIELDS
651325* - Nuclear Properties & Reactions
A=6-19
Experimental- Nuclear Reactions & Scattering- (-1987)