The 18F(p,a)15O reaction rate for application to nova gamma-ray emission

Abstract

The 18F(p,a)15O reaction is recognized as one of the most important reaction for nova gamma-ray astronomy as it governs the early <= 511 keV emission. However, its rate remains largely uncertain at nova temperatures due to unknown low-energy resonance strengths. We report here on our last results concerning the study of the D(18F,pa)15N reaction, as well as on the determination of the 18F(p,a)15O reaction rate using the R-matrix theory. Remaining uncertainties are discussed.

arXiv commentContribution to the Eighth International Symposium on Nuclei in the Cosmos, Vancouver july 19-23. 4 pages and 2 figures

References in corpus (4)

• Gamma--ray emission from individual classical novae
• Gamma-ray emission from novae related to positron annihilation: constraints on its observability posed by new experimental nuclear data
• D(18F,pa)15N reaction applied to nova gamma-ray emission
• Comparison of low--energy resonances in 15N(alpha,gamma)19F and 15O(alpha,gamma)19Ne and related uncertainties

Cited by in corpus (4)

• The Effects of the pep Nuclear Reaction and Other Improvements in the Nuclear Reaction Rate Library on Simulations of the Classical Nova Outburst
• Resonances in 19Ne with relevance to the astrophysically important 18F(p,α)15O reaction
• Indirect study of 19Ne states near the 18F+p threshold
• Key ${}^{19}$Ne states identified affecting $\gamma$-ray emission from ${}^{18}$F in novae