Category: a_g

18O(a,g)22Ne Wang et al. 2023 Direct measurement performed at the Jinping Underground Nuclear Astrophysics experimental facility (JUNA). The critical 470 keV resonance energy is precisely determined for the first time by direct measurement. Furthermore, the authors derived primary γ-ray branching ratios and then determine the spin-parity of the 470 keV resonance state, which resolves the… Continue reading 18O(a,g)22Ne

144Sm(a,g)148Gd Gyurky et al. 2023 Reaction rate derived with reduced uncertainties from a new experimentally constrained α-nucleus optical model potential. The achieved accuracy should now permit stronger constraints for astrophysical conclusions for the γ-process. Link to the paper.

17O(a,g)21Ne Frost-Schenk et al 2022 The rate is based on a full evaluation of the known spectroscopic information on 21Ne, the compound nucleus of 17O+alpha, with updated information from the DRAGON measurement of 17O(a,g) and based on updated information from 20Ne(d,p) experiments. Link to the paper

7Be(a,g)11C Psaltis et al. 2022 New thermonuclear reaction rate for the 7Be(α,γ)11C reaction. Updated with the measurement of the strengths for the 1110 and 1155 keV resonances using the DRAGON recoil separator in inverse kinematics. For the evaluation of the rate, nuclear data were adopted from Kelley et al. (2011) (TUNL A=11 evaluation) and the… Continue reading 7Be(a,g)11C

22Ne(a,g)26Mg Adsley et al. 2021 A reevaluation of both 22Ne(a,n)25Mg and 22Ne(a,g)26Mg reaction rates using updated nuclear data from a number of sources, including the nuclear data from Ota et al. 2021and updating spin and parity assignments. Link to the publication: PHYSICAL REVIEW C 103, 015805 (2021) Wiescher et al. 2023 Evaluation of both 22Ne(a,n)25Mg and 22Ne(a,g)26Mg reaction rates… Continue reading 22Ne(a,g)26Mg