New Determination of the Astrophysical S Factor SE1 of the C12(α,γ)O16 Reaction

Details New Determination of the Astrophysical S Factor SE1 of the C12(α,γ)O16 Reaction New Determination of the Astrophysical S Factor SE1 of the C12(α,γ)O16 Reaction

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrvl..99e2502t&link_type=abstract

Physical Review Letters, vol. 99, Issue 5, id. 052502

Physics

14

Single-Particle Levels And Strength Functions, Alpha Decay, 3H-, 3He-, And 4He-Induced Reactions, Hydrostatic Stellar Nucleosynthesis

Scientific paper

A new measurement of the β-delayed α decay of N16 has been performed using a set of high efficiency ionization chambers. Sources were made by implantation of a N16 beam, yielding very clean α spectra down to energies as low as 400 keV. Our data are in good agreement with earlier results. For the S factor SE1, we obtain a value of 74±21keVb. In spite of improvements in the measurement, the error in SE1 remains relatively large because of the correlations among the fit parameters and the uncertainties inherent to the extrapolation.

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