Phys.Rev. C 91, 065803 (2015)

M.L.Sergi, C.Spitaleri, M.La Cognata, L.Lamia, R.G.Pizzone, G.G.Rapisarda, X.D.Tang, B.Bucher, M.Couder, P.Davies, R.deBoer, X.Fang, L.Lamm, C.Ma, M.Notani, S.O'Brien, D.Roberson, W.Tan, M.Wiescher, B.Irgaziev, A.Mukhamedzhanov, J.Mrazek, V.Kroha

Improvement of the high-accuracy ¹⁷O(p, α)¹⁴N reaction-rate measurement via the Trojan Horse method for application to ¹⁷O nucleosynthesis

NUCLEAR REACTIONS ²H(¹⁷O, α¹⁴N)n, E=41, 43.5 MeV; measured particle spectra, (¹⁴N)α-coin at LNS-Catania and NSL-Notre Dame accelerator facilities; deduced Q-value spectra, yields as function of ¹⁴N and α emission angles, E(¹⁴N-α) versus E(α-n) plots, neutron momentum distributions, (¹⁴N)α-coincidence yields for different neutron momentum ranges, differential σ(E) of the Trojan-Horse reaction. ¹⁸F; deduced parameters for the two resonance levels, resonance strengths for the 65-keV resonance. ¹⁷O(p, α)¹⁴N; deduced reaction rates via Trojan Horse Method (THM). ¹⁸F; compiled resonance energies, J, π, Γ_p, Γ_α, Γ_γ for 24 resonances from -3.12 keV to 1684.5 keV. Relevance to destruction of ¹⁷O and the formation of ¹⁸F in stellar sites.

doi: 10.1103/PhysRevC.91.065803