Updated reaction rate of Mg25(p,γ)Al26 and its astrophysical implication

• DOI: 10.1103/physrevc.107.065801
• Publication Date: 2023-06-05T16:06:29Z
• Authors: H. Zhang; J. Su; Z. H. Li; Y. J. Li; E. T. Li; C. Chen; J. J. He; Y. P. Shen; G. Lian; B. Guo; X. Y. Li; L. Y. Zhang; Y. D. Sheng; Y. J. Chen; L. H. Wang; L. Zhang; F. Q. Cao; W. Nan; W. K. Nan; G. X. Li; N. Song; B. Q. Cui; L. H. Chen; R. G. Ma; Z. C. Zhang; T. Y. Jiao; B. S. Gao; X. D. Tang; Q. Wu; J. Q. Li; L. T. Sun; S. Wang; S. Q. Yan; J. H. Liao; Y. B. Wang; S. Zeng; D. Nan; Q. W. Fan; W. P. Liu
• Keywords: Presolar grains; Nuclide

$^{26}\mathrm{Al}$ with a half-life of $7.17\ifmmode\times\else\texttimes\fi{}{10}^{5}$ years is one the most significant nuclides in $\ensuremath{\gamma}$-ray astronomy and presolar grains meteorites. Its main production mechanism $\mathrm{H}$-burning MgAl cycle $^{25}\mathrm{Mg}(p,\ensuremath{\gamma})^{26}\mathrm{Al}$ reaction. In temperature region 0.05--0.3 GK astrophysical interest, reaction rate dominated by resonant capture several low-energy resonances. this work, we report results complete experimental investigation ${E}_{\mathrm{c}.\mathrm{m}.}=92$, 130, 189 keV resonances Jinping Underground Nuclear Astrophysics Experimental Facility. The updated thermonuclear (32--39)% higher than that obtained at Laboratory for around 0.07--0.09 GK, mainly due to 32% enhancement 92-keV resonance strength. impact our new on yield 5 ${\mathrm{M}}_{\ensuremath{\bigodot}}$ low-metallicity asymptotic giant branch star investigated, which an increase (45--79)% found adopting rates.