Abstract
The ( reaction represents a breakout reaction linking the first and second cycles of the CNO cycles redistributing the carbon and nitrogen abundances into the oxygen range. The reaction is dominated by two broad resonances, at and 1028 keV, and a direct capture contribution to the ground state of . Interference effects between these contributions both in the low-energy region ( keV) and between the two resonances ( keV) can dramatically affect the extrapolation to energies of astrophysical interest. To facilitate a reliable extrapolation, the reaction has been remeasured covering the energy range from keV down to 130 keV. The results have been analyzed in the framework of a multilevel -matrix theory and an value of 39.6 keV b has been found.
3 More- Received 16 June 2010
DOI:https://doi.org/10.1103/PhysRevC.82.055804
©2010 American Physical Society