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NSR database version of April 26, 2024.

Search: Author = D.Roberson

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2015SE08      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
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2013GU02      Phys.Rev. C 87, 012801 (2013)

M.Gulino, C.Spitaleri, X.D.Tang, G.L.Guardo, L.Lamia, S.Cherubini, B.Bucher, V.Burjan, M.Couder, P.Davies, R.deBoer, X.Fang, V.Z.Goldberg, Z.Hons, V.Kroha, L.Lamm, M.La Cognata, C.Li, C.Ma, J.Mrazek, A.M.Mukhamedzhanov, M.Notani, S.O'Brien, R.G.Pizzone, G.G.Rapisarda, D.Roberson, M.L.Sergi, W.Tan, I.J.Thompson, M.Wiescher

Suppression of the centrifugal barrier effects in the off-energy-shell neutron + ¹⁷O interaction

NUCLEAR REACTIONS ²H(¹⁷O, α¹⁴C), E=41, 43.5 MeV; measured α and ¹⁴C particle spectra, (¹⁴C)α-coin, angular distributions, yields using position-sensitive silicon detectors (PSD) at LNS, Catania, and at NSL, Notre Dame. CD₂ target; deduced momentum distributions, Q value. DWBA analysis. ¹⁷O(n, α)¹⁴C, E(cm)=0-350 keV; deduced yields, angular distributions, neutron from quasifree breakup of deuteron. ¹⁸O; deduced resonances, J, π, and excitation functions. Trojan Horse method (THM), and suppression of centrifugal barrier. Comparison with previous studies. Relevance to neutron-induced reactions in nuclear reactors, and nucleosynthesis in astrophysics.

doi: 10.1103/PhysRevC.87.012801
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