1. The Enge Split-Pole Spectrograph at the University of Notre Dame.
- Author
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Carmichael, Scott, O'Malley, Patrick, Bardayan, Daniel, Bailey, Thomas, Boomershine, Chevelle, Brodeur, Maxime, Coil, Sydney, Dembski, Cade, Gore, Tom, Jones, Chloe, Koros, Jes, Lee, Kevin, Domingues Magro, Pedro Luiz, McDonaugh, John, Mulcahy, Griffin, Porter, William, Rivero, Fabio, Robertson, Daniel, Rufino, Javier, and Sanchez, Adam
- Subjects
SPECTROGRAPHS ,NUCLEAR astrophysics ,NUCLEAR reactions ,SUPERNOVAE - Abstract
Nuclear reactions play a crucial role in determining the nucleosynthesis that occurs in astrophysical events. The rates of many reactions that significantly impact certain nucleosynthesis processes can not be currently measured via direct means. These reactions must be constrained in another manner, such as determining the level energies and other structure properties of the compound nuclei. In order to measure level energies of nuclei relevant to nuclear astrophysics, the Enge split-pole spectrograph has been installed and commissioned at the University of Notre Dame's Nuclear Science Laboratory. The first scientific measurement has also been performed. Structure properties of
58 Cu were measured via the reaction58 Ni(3 He,t)58 Cu to provide the first experimental constraint of the57 Ni(p,γ)58 Cu reaction rate, which impacts the production of of44 Ti,57 Fe, and59 Ni in core-collapse supernovae. Preliminary analysis of this measurement confirms the level energies of states in58 Cu that could lead to significant resonances in the57 Ni(p,γ)58 Cu reaction rate, while suggesting the presence of additional states that have not been previously observed but could also lead to significant resonances. [ABSTRACT FROM AUTHOR]- Published
- 2024
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