1. First measurement of 25Al+p resonant scattering relevant to the astrophysical reaction 22Mg(α,p)25Al.
- Author
-
Hu, J., Yamaguchi, H., Lam, Y.H., Heger, A., Kahl, D., Jacobs, A.M., Johnston, Z., Xu, S.W., Zhang, N.T., Ma, S.B., Ru, L.H., Liu, E.Q., Liu, T., Hayakawa, S., Yang, L., Shimizu, H., Hamill, C.B., Murphy, A. StJ., Su, J., and Fang, X.
- Subjects
X-ray bursts ,THERMONUCLEAR fuels ,ASTROPHYSICS ,RESONANCE ,R-matrices - Abstract
Type I X-ray bursts (XRBs) are the most frequently observed thermonuclear explosions in nature. The
22 Mg(α,p)25 Al reaction plays a critical role in XRB models. However, experimental information is insufficient to deduce a precise22 Mg(α,p)25 Al reaction rate for the respective XRB temperature range. A new measurement of25 Al+p resonant scattring was performed up to the astrophysically interested energy region of22 Mg(α,p)25 Al. Several resonances were observed in the excitation functions, and their level properties have been determined based on an R-matrix analysis. In particular, proton widths and spin-parities of four natural-parity resonances above the α threshold of26 Si, which can contribute the reaction rate of22 Mg(α,p)25 Al, were first experimentally determined. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF