Phys.Rev. C 105, 065805 (2022)

M.Williams, A.M.Laird, A.Choplin, P.Adsley, B.Davids, U.Greife, K.Hudson, D.Hutcheon, A.Lennarz, C.Ruiz

Constraints on key ¹⁷O(α, γ)²¹Ne resonances and impact on the weak s process

NUCLEAR REACTIONS ⁴He(¹⁷O, γ)²¹Ne, E(cm)=1311, 811, 721, 634, 613 keV; measured reaction products, recoiling ²¹Ne nuclei, (recoil)γ-coin using DRAGON facility of ISAC-I at TRIUMF, and a 4π array of 30 BGO scintillators; deduced time-of-flight (TOF) spectra for resonant yield measurements. ²¹Ne; deduced levels, resonances, resonance strengths, and compared with previous experimental results. ¹⁷O(α, γ)²¹Ne, T=0.010-10.0 GK; deduced thermonuclear reaction rates using sing the RATESMC Monte Carlo code, and s-process elemental yields.

doi: 10.1103/PhysRevC.105.065805