Abstract
The reaction is the predominant destruction mechanism in novae of the radionuclide , a target of -ray observatories. Thus, its rate is important for understanding production in novae. We have studied resonances in the system by making a measurement of a proton-transfer reaction . We have observed 15 levels, 5 of which are below the proton threshold, including a subthreshold state, which has significant strength. Our data provide a direct determination of the spectroscopic strength of these states and new constraints on their spins and parities, thereby resolving a controversy, which involves the 8- and 38-keV resonances. The reaction rate is reevaluated, which takes the subthreshold resonance and other new information determined in this experiment into account.
- Received 26 August 2010
DOI:https://doi.org/10.1103/PhysRevC.83.052801
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