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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 istaken as example and illustration for research on extremely slowand complicated reactions of astrophysical interest. Twosensitive experiments in the energy range Ec.m. = 890-2800 keV have been performed and the extrapolation to300 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 astrophysicalreaction rate has been determined with ±25% precision inthe temperature range 0.001 ≤T9≤10. From 30years of research on this reaction, some problems related toexperimental nuclear astrophysics become evident and suggestionsfor 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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