Phys. Rev. Lett. 99, 052502 (2007) [4 pages]New Determination of the Astrophysical S Factor SE1 of the 12C(α,γ)16O ReactionReceived 16 March 2007; published 3 August 2007 A new measurement of the β-delayed α decay of 16N has been performed using a set of high efficiency ionization chambers. Sources were made by implantation of a 16N 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±21 keV b. 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. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.052502
DOI:
10.1103/PhysRevLett.99.052502
PACS:
21.10.Pc, 23.60.+e, 25.55.−e, 26.20.+f
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