Anastasiou, M. and Wiedenhöver, I. and Blackmon, J. C. and Baby, L. T. and Caussyn, D. D. and Hood, A. A. and Koshchiy, E. and Lighthall, J. C. and Macon, K. T. and Parker, J. J. and Rauscher, T. and Rijal, N.. (2022) Measurement of the Ne-18(alpha, p) Na-21 reaction with the ANASEN active-target detector system at E-c.(m).=2.5-4 MeV. Physical Review C, 105 (5). 055806.
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Abstract
The 18Ne(α,p)21Na reaction plays a significant role in Type-I X-ray bursts. It is a major path in the breakout from the hot-CNO cycles to the synthesis of heavier elements in the αp- and rp-processes. An experiment to determine the cross section of this reaction was performed with the ANASEN active-target detector system, determining the cross section at energies between 2.5 and 4 MeV in the center-of-mass frame. The measured cross sections for reactions populating the ground state in 21Na are consistent with results obtained from the time-inverse reaction, but significantly lower than the previously published experimental data of direct measurements. The total cross sections are also compared with those derived from indirect methods and statistical-model calculations. This experiment establishes a new experimental data set on the excitation function of the 18Ne(α,p)21Na reaction, revealing the significance of the excited states' contributions to the total reaction cross section and allowing us to separate the contribution of the (α,2p) reaction. The impact of the measured cross section on thermal reaction rates is discussed.
Faculties and Departments: | 05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann) |
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UniBasel Contributors: | Rauscher, Thomas |
Item Type: | Article, refereed |
Article Subtype: | Research Article |
Publisher: | American Physical Society |
ISSN: | 2469-9985 |
e-ISSN: | 2469-9993 |
Note: | Publication type according to Uni Basel Research Database: Journal article |
Language: | English |
Identification Number: | |
edoc DOI: | |
Last Modified: | 28 Jul 2022 06:50 |
Deposited On: | 07 Jul 2022 09:22 |
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