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Some ideas concerning the future of Nuclear Astrophysics illustrated by the example of the key reaction 12C(α,γ)16O

Published online by Cambridge University Press:  12 July 2004

A. Jorissen ,
S. Goriely ,
M. Rayet ,
L. Siess ,
H. Boffin  and
J. W. Hammer
J. W. Hammer*
Affiliation:
Institut für Strahlenphysik, University of Stuttgart, Allmandring 3, 70569 Stuttgart, Germany
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Abstract

The key reaction 12C(α,γ)16O is taken as example and illustration for research on extremely slow and complicated reactions of astrophysical interest. Two sensitive experiments in the energy range Ec.m. = 890-2800 keV have been performed and the extrapolation to 300 keV of the S-factors obtained by an R-matrix analysis are SE1300 =(77 ± 17)keV b; SE2300=(81±22)keV b; Stot300 = (162 ± 40) keV b. The astrophysical reaction rate has been determined with ±25% precision in the temperature range 0.001 ≤T9≤10. From 30 years of research on this reaction, some problems related to experimental nuclear astrophysics become evident and suggestions for improving future works are made.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 11: The Future Astronuclear Physics , 2004 , pp. 217 - 225
Copyright
© EAS, EDP Sciences, 2004

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