Abstract
At temperatures below 0.1 GK, the reaction is the only breakout path out of the CNO cycle. Experimental studies of this reaction are challenging from a technical perspective due to copious -ray background from the far stronger reaction channel. Here, we present the first inverse kinematics study of the reaction, in which we measure the strength of the 323-keV resonance. We find a strength value of meV, which is a factor of two larger than the most recent previous study. The discrepancy is likely the result of a direct to ground state transition which previous studies were not sensitive to. We also observe the transition to the first state, which has not been observed for this resonance in previous studies. A new thermonuclear reaction rate is calculated and compared with the literature.
- Received 19 December 2020
- Accepted 22 March 2021
DOI:https://doi.org/10.1103/PhysRevC.103.055805
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