10 B (d , p) 11 B and 25 Mg(d , p) 26 Mg measurements using the Super-Enge Split-Pole Spectrograph
Abstract
Two experiments were preformed using the Super-Enge Split-Pole Spectrograph at Florida State University's John D. Fox Accelerator Laboratory to measure high-resolution spectra of states in 26 Mg and 11 B through the use of (d,p) single-particle transfer reactions. Spin assignment confirmation of five states above the proton threshold of 26 Si are necessary for assessing the astrophysical impact of the 25 Al(p , γ) reaction rate on the 26 Al cosmic abundance. We investigate 25 Mg(d , p) 26 Mg as a mirror to 26 Al to assign spin to the mirrors to the states of interest. A previous study observed beta-delayed proton emission in the neutron-rich nucleus 11 Be with an unexpectedly high decay mode strength that can only be understood if the decay proceeds through a new single-particle resonance in 11 B strongly fed by beta-decay. A recent pre-print corroborates the study, providing the expected excitation energy. While the resonance in 11 B was not found, spin assignments of 11 B states were assigned, one of which was previously unassigned.
This work was supported by FSU.- Publication:
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APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DNP.HA007S