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

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
University of Notre Dame, Notre Dame, Indiana 46556
OSTI Identifier:
6201199
Resource Type:
Journal Article
Journal Name:
Phys. Rev., C; (United States)
Additional Journal Information:
Journal Volume: 19:2
Country of Publication:
United States
Language:
English
Subject:
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)

Citation Formats

Kolata, J.J., Freeman, R.M., Haas, F., Heusch, B., and Gallmann, A. Reaction cross sections for /sup 16/O + /sup 12/C. United States: N. p., 1979. Web. doi:10.1103/PhysRevC.19.408.
Kolata, J.J., Freeman, R.M., Haas, F., Heusch, B., & Gallmann, A. Reaction cross sections for /sup 16/O + /sup 12/C. United States. doi:10.1103/PhysRevC.19.408.
Kolata, J.J., Freeman, R.M., Haas, F., Heusch, B., and Gallmann, A. Thu . "Reaction cross sections for /sup 16/O + /sup 12/C". United States. doi:10.1103/PhysRevC.19.408.
@article{osti_6201199,
title = {Reaction cross sections for /sup 16/O + /sup 12/C},
author = {Kolata, J.J. and Freeman, R.M. and Haas, F. and Heusch, B. and Gallmann, A.},
abstractNote = {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.},
doi = {10.1103/PhysRevC.19.408},
journal = {Phys. Rev., C; (United States)},
number = ,
volume = 19:2,
place = {United States},
year = {1979},
month = {2}
}