1. Studies of X-ray burst reactions with radioactive ion beams from RESOLUT.
- Author
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Blackmon, J. C., Deibel, C. M., Gardiner, H. E., Good, E., Hood, A. A. D., Lai, J., Laminack, A., Linhardt, L. E., Macon, K. T., Need, E., Rasco, B. C., Lighthall, J., Wiedenhöver, I., Belarge, J., Kuvin, S. A., Anastasiou, M., Baby, L. T., Baker, J., Höflich, P., and Rijal, N.
- Subjects
X-ray bursts ,NUCLEAR reactions ,FLUORINE isotopes ,NEON isotopes ,ION beams ,NUCLEAR structure ,BOUND states - Abstract
Reactions on certain proton-rich, radioactive nuclei have been shown to have a significant influence on X-ray bursts. We provide an overview of two recent measurements of important X-ray burst reactions using in-flight radioactive ion beams from the RESOLUT facility at the J. D. Fox Superconducting Accelerator Laboratory at Florida State University. The
17 F(d,n)18 Ne reaction was measured, and Asymptotic Normalization Coefficients were extracted for bound states in18 Ne that determine the direct-capture cross section dominating the17 F(p,γ)18 Ne reaction rate for T≲ 0.45 GK. Unbound resonant states were also studied, and the single-particle strength for the 4.523-MeV (3+ ) state was found to be consistent with previous results. The19 Ne(d,n)20 Na proton transfer reaction was used to study resonances in the19 Ne(p,γ)20 Na reaction. The most important 2.65-MeV state in20 Na was observed to decay by proton emission to both the ground and first-excited states in19 Ne, providing strong evidence for a 3+ spin assignment and indicating that proton capture on the thermally-populated first-excited state in19 Ne is an important contributor to the19 Ne(p,γ)20 Na reaction rate. [ABSTRACT FROM AUTHOR]- Published
- 2017
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