Observation of the astrophysically important 3+ state in 18Ne via elastic scattering of a radioactive 17F beam from 1H
The 17F(p, γ)18 reaction is important in stellar explosions, but its rate has been uncertain because of an expected 3+ state in 18Ne that has never been conclusively observed. This state would provide a strong l = 0 resonance and, depending on its excitation energy, could dominate the stellar reaction rate. We have observed this missing 3+ state by measuring the 1H(17F, p)17F excitation function with a radioactive 17F beam at the ORNL Holifield Radioactive Ion Beam Facility. We find that the state lies at a center-of-mass energy of Er = 599.8 ± 1.5stat ± 2.0sys keV (Ex = 4523.7 ± 2.9keV) and has a width of Γ = 18 ± 2stat ± 1sys keV. © 1999 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Bardayan, D., Blackmon, J., Brune, C., Champagne, A., Chen, A., Cox, J., Davinson, T., Hansper, V., Hofstee, M., Johnson, B., Kozub, R., Ma, Z., Parker, P., Pierce, D., Rabban, M., Shotter, A., Smith, M., Swartz, K., Visser, D., & Woods, P. (1999). Observation of the astrophysically important 3+ state in 18Ne via elastic scattering of a radioactive 17F beam from 1H. Physical Review Letters, 83 (1), 45-48. https://doi.org/10.1103/PhysRevLett.83.45