How Well Do We Know the Beta-Decay of N16 and Oxygen Formation in Helium Burning?

Details How Well Do We Know the Beta-Decay of N16 and Oxygen Formation in Helium Burning? How Well Do We Know the Beta-Decay of N16 and Oxygen Formation in Helium Burning?

1998-09-17

arxiv.org/abs/astro-ph/9809228v1

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, Nuclei In the Cosmos V Supported by USDOE grant DE-FG02-94ER40870

Scientific paper

Contrary to claims that the problem has been solved, the astrophysical E1 S-factor of \c12ag is not yet well known. R-Matrix analyses of elastic scattering data,\c12ag data, and data on the beta-delayed alpha-particle emission of N16 are not consistent and a small S-factor solution SE1(300) cannot be ruled out. In particular, data on the beta- delayed alpha-particle emission of N16 do not agree. The unaltered Mainz data do not agree with TRIUMF, but agree with both Seattle and Yale-UConn. The TRIUMF col- laboration has recalibratedthe Mainz('71) data; however, we dispute both the alteration of the Mainz data performed by the TRIUMF col- laboration and the very justification for the recalibration.

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