EPJ Web Conf.
Volume 260, 2022The 16th International Symposium on Nuclei in the Cosmos (NIC-XVI)
|Number of page(s)||5|
|Section||Novae and XRB|
|Published online||24 February 2022|
First measurement of 25Al+p resonant scattering relevant to the astrophysical reaction 22Mg(α,p)25Al
1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
2 School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
3 Center for Nuclear Study(CNS), University of Tokyo, RIKEN campus, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
4 National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
5 School of Physics and Astronomy, Monash University, Victoria 3800, Australia
6 OzGrav-Monash – Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University, VIC 3800, Australia
7 Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D), Australia
8 The Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824, USA
9 Extreme Light Infrastructure -Nuclear Physics, IFIN-HH, 077125 Bucharest-M˘agurele, Romania
10 SUPA, School of Physics & Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
11 Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
12 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
13 Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, Guangdong, China
14 Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
15 Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
16 Laboratori Nazionali del Sud-INFN, Via S. Soﬁa 62, Catania 95123, Italy
17 Dipartimento di Fisica e Astronomia “Ettore Majorana” -Università degli Studi di Catania
18 Centro Siciliano di Fisica Nucleare e Struttura della Materia (CSFNSM)
19 Facoltà di Ingegneria e Architettura, Università degli Studi di Enna “Kore”, Enna 94100, Italy
20 Department of Physics & Astronomy, McMaster University, Ontario L8S 4M1, Canada
21 Département de Physique, Université Libre de Bruxelles, Bruxelles B-1050, Belgium
22 Department of Physics, Ewha Womans University, Seoul 03760, Korea
23 RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
* e-mail: email@example.com
Published online: 24 February 2022
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.
© The Authors, published by EDP Sciences, 2022
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