Abstract
The 1809-keV ray from the decay of is an important target for -ray astronomy. In the convective C/Ne burning shell of massive presupernova stars, the reaction directly influences the production of . We have performed a direct measurement of the reaction cross section at the appropriate astrophysically important energies. The stellar rate calculated in the present work is larger than the recommended rate by nearly a factor of 40 and could strongly affect the production of in massive stars.
- Received 25 November 2013
DOI:https://doi.org/10.1103/PhysRevLett.112.152701
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