Simultaneous measurement of the F-18(p,p)F-18 and F-18(p,alpha)O-15 reactions: Implications for the level structure of Ne-19, and for F-18 production in novae
(2009) Physical Review C (Nuclear Physics) — Vol. 79, n° 5 (2009)
Files
No attached file found for this publication.
Details
- Authors
- Abstract
- The largest nuclear physics uncertainty in studies of gamma-ray emission from novae arises from the F-18(p,alpha)O-15 reaction rate that affects the abundance of F-18. Direct measurements have been made of the F-18(p,p)F-18 and F-18(p,alpha)O-15 reaction differential cross sections in the energy range 0.6 <= E-c.m.<= 1.6 MeV. Several resonances have been observed in both measurements, with simultaneous R-matrix fits used to determine the properties of corresponding states in Ne-19. A recently reported state at 7.420 MeV is not seen, while new states are seen including one of J(pi)=3/2(+). A candidate for a recently predicted broad J(pi)=1/2(+) state is seen, which would have significant impact on the low energy F-18(p,alpha)O-15 reaction rate, but its alpha width is significantly smaller than expected.
- Affiliations
Citations
Murphy, A. St. J., Laird, A. M., Angulo, C., Buchmann, L., Davinson, T., Descouvemont, P., Fox, S. P., Jose, J., Lewis, R., Ruiz, C., Vaughan, K., & Walden, P. (2009). Simultaneous measurement of the F-18(p,p)F-18 and F-18(p,alpha)O-15 reactions: Implications for the level structure of Ne-19, and for F-18 production in novae. Physical Review C (Nuclear Physics), 79(5). https://doi.org/10.1103/PhysRevC.79.058801 (Original work published 2009)