The 14O(α,p)17F reaction rate

Level structure of18Ne and its importance in the14O(α,pTan1, Aprahamian2, Bucher3 et al. 2012Phys. Rev. C172150View full textAdd to dashboardCite

“…These branching ratios are given in Table II. There is a strong discrepancy in these partial decay branchings between our results and the previously reported values [7,8,11]. The strong p ′ branchings previously reported for this level by [7,8] are excluded by the upper limit of the present work.…”

“…There is a strong discrepancy in these partial decay branchings between our results and the previously reported values [7,8,11]. The strong p ′ branchings previously reported for this level by [7,8] are excluded by the upper limit of the present work. The upper limit of the branching ratio corresponding to the 2p-decay channel is at least two orders of magnitude bigger than previous estimates [11,18].…”

“…Note that they reported an unusually large p ′ branching. A similar measurement was done by He et al [8] reporting also a strong inelastic p ′ branching but not to the degree suggested in reference [7] with Γ p ′ Γp ∼ 1. The FSU group based on their work using the ANC method to study the mirror level in 18 O, suggested a value of Γ α ≈ 2 eV [10].…”

“…Wiescher et al [1] predicted this J π = 1 − level at E x = 6.125 MeV with Γ = Γ p = 51 keV from the mirror state in 18 O. Hahn et al [2] also identified this level as J π = 1 − and Γ ≤ 40 keV based on the analysis of transfer reactions. Blackmon et al [7] relied on R-matrix fits to assign J π = 1 − with Γ = 58±2 keV, Γ α = 8±2 eV and Γ p ′ Γp = 2.4. Note that they reported an unusually large p ′ branching.…”

“…As mentioned above, the p ′ -decay channel has been reported for the 6.15 MeV level [7,8] and the 7.06 MeV level [9]. But the disagreements between existing results [6][7][8] left the partial widths still largely unconstrained. On the other hand, measurement of the Γ 2p is important if it is large enough because it can effectively reduce the resonance strength.…”