Abstract
We study the sensitivity to variations in the triple-alpha and reaction rates, of the yield of the neutrino-process isotopes , , , , and in core-collapse supernovae. Compared to solar abundances, less than 15% of , about 25%–80% of , and about half of is produced in these stars. Over a range of for each helium-burning rate, is overproduced and the yield varies by an amount larger than the variation caused by the effects of neutrino oscillations. The total yield, however, may eventually provide constraints on supernova neutrino spectra.
- Received 30 November 2010
DOI:https://doi.org/10.1103/PhysRevLett.106.152501
© 2011 American Physical Society