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Direct measurement of the N-14(p, gamma) O-15 S-factor

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Runkle, R.C. Champagne, A.E. Angulo, C. Fox, C. Iliadis, C. Pollanen, J.

(eng) We have measured the 14N(p,g)15O excitation function for energies in the range E_p = 155--524 keV. Fits of these data using R-matrix theory yield a value for the S-factor at zero energy of 1.64(17) keV b, which is significantly smaller than the result of a previous direct measurement. The corresponding reduction in the stellar reaction rate for 14N(p,g)15O has a number of interesting consequences, including an impact on estimates for the age of the Galaxy derived from globular clusters. Comment: 5 pages, 3 figures, submitted to Phys. Rev. Lett

Document type Preprint
Access type Accès libre
Publication date 2004
Affiliation UCL
Keywords Nuclear Experiment
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Bibliographic reference Runkle, R.C. ; Champagne, A.E. ; Angulo, C. ; Fox, C. ; Iliadis, C. ; et. al. Direct measurement of the N-14(p, gamma) O-15 S-factor. (2004) 5 p. pages
Permanent URL http://hdl.handle.net/2078/30883