Abstract

Type I X-ray bursts (XRBs) are the most frequently observed thermonuclear explosions in nature. The 22Mg(α,p)25Al reaction plays a critical role in XRB models. However, experimental information is insufficient to deduce a precise 22Mg(α,p)25Al reaction rate for the respective XRB temperature range. A new measurement of 25Al+p resonant scattring was performed up to the astrophysically interested energy region of 22Mg(α,p)25Al. 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 of 26Si, which can contribute the reaction rate of 22Mg(α,p)25Al, were first experimentally determined.

Details

Title
First measurement of 25Al+p resonant scattering relevant to the astrophysical reaction 22Mg(α,p)25Al
Author
J. Hu; 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; J. Su; Fang, X; Chae, K Y; Kwag, M S; Cha, S M; Duy, N N; Uyen, N K; Kim, D H; Pizzone, R G; La Cognata, M; Cherubini, S; Romano, S; Tumino, A; Liang, J; Psaltis, A; Sferrazza, M; Kim, D; Li, Y Y; Kubono, S
Section
Novae and XRB
Publication year
2022
Publication date
2022
Publisher
EDP Sciences
ISSN
21016275
e-ISSN
2100014X
Source type
Conference Paper
Language of publication
English
DOI
https://doi.org/10.1051/epjconf/202226005001
ProQuest document ID
2634536313
Copyright
© 2022. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.